{"id":7313,"date":"2026-10-09T09:00:25","date_gmt":"2026-10-09T07:00:25","guid":{"rendered":"https:\/\/retelit.it\/uncategorized\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/"},"modified":"2026-10-18T20:58:18","modified_gmt":"2026-10-18T18:58:18","slug":"sd-wan-and-sase-the-new-paradigm-in-enterprise-networking","status":"publish","type":"post","link":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/","title":{"rendered":"SD-WAN and SASE: The New Paradigm in Enterprise Networking"},"content":{"rendered":"\n<p class=\"tl-dr\">SD-WAN (Software-Defined Wide Area Network) and SASE (Secure Access Service Edge) integrate networking and security into a unified architecture, optimizing connectivity between locations and applying Zero Trust policies to users, devices, and cloud resources.<\/p>\n\n<p class=\"wp-block-paragraph\">Key points:<\/p>\n\n<div class=\"summary-box\">\n<ul>\n<li>SD-WAN optimizes connectivity through intelligent traffic routing and centralized policy management.<\/li>\n<li>SASE integrates networking and security into a cloud-native architecture based on Zero Trust principles.<\/li>\n<li>Gartner predicts that by 2028, 70% of SD-WAN purchases will be part of a single-vendor SASE offering.<\/li>\n\n<li>The adoption can take place gradually, while maintaining compatibility with the existing infrastructure during the transition.<\/li><\/ul><\/div>\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n<p class=\"wp-block-paragraph\">In enterprise environments, the network is no longer just a collection of connections that need to be kept up and running. It is the platform that delivers ERP, CRM, Unified Communication and Collaboration (UCC) services, and artificial intelligence solutions from the data center to the cloud and out to branch offices. Each location is also an access point that must be secured, while users, devices, and applications are increasingly distributed. Performance and security therefore cannot remain separate domains, managed with distinct tools and controls. SD-WAN and SASE thus converge into a single architecture that integrates connectivity, traffic management, and security, with policies defined and enforced centrally. For enterprise organizations, this means having a scalable and flexible network that adapts to business evolution and ensures speed, continuity, and protection for increasingly cloud-oriented IT environments.     <\/p>\n\n<h2 id=\"h-i-limiti-della-rete-aziendale-tradizionale-nell-era-del-cloud\" class=\"wp-block-heading\">The Limitations of the Traditional Corporate Network in the Cloud Era<\/h2>\n\n<p class=\"mini-answer\">The traditional corporate network connects branch offices to the data center via dedicated MPLS (Multiprotocol Label Switching) circuits and also routes traffic to the Internet through the central hub: a model designed for centralized internal applications and resources, which can introduce latency and inefficiency when accessing cloud services.<\/p>\n\n<p class=\"wp-block-paragraph\">For years, MPLS technology has been the standard for enterprise wide-area networks: data travels along predefined paths within the carrier\u2019s network, with guaranteed priority for voice and video. In the hub-and-spoke model, branch offices connect to the data center, which also houses firewalls and Internet access. This architecture ensures predictable quality but restricts each location to fixed routes and a single exit point: to reach a SaaS (Software as a Service) application, traffic must first pass through the central hub, resulting in bottlenecks and slower scalability. For this reason, dynamic route selection\u2014which chooses the best path in real time\u2014represents a significant leap forward in network intelligence.   <\/p>\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n<h2 id=\"h-sd-wan-e-sase-cosa-sono-e-qual-e-la-differenza\" class=\"wp-block-heading\">SD-WAN and SASE: What Are They, and What&#8217;s the Difference?<\/h2>\n\n<p class=\"mini-answer\">SD-WAN is the network layer that manages locations via software and routes traffic by application; SASE adds a cloud-delivered security layer that protects users, locations, and applications wherever they are.<\/p>\n\n<!-- Retelit block: stat-highlight (hero) -->\n<aside class=\"rtl-blk-rtlnix60u\" style=\"all:initial;display:block;font-family:'Raleway', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;margin:32px 0;padding:32px 28px;background:linear-gradient(135deg, #02284b 0%, #043f75 100%);border-radius:16px;color:#fff;text-align:center\">\n<style>\n.rtl-blk-rtlnix60u *{box-sizing:border-box}\n.rtl-blk-rtlnix60u .rtl-num{font:800 72px\/1 'Raleway', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;letter-spacing:-0.03em;font-variant-numeric:tabular-nums;display:inline-block}\n.rtl-blk-rtlnix60u .rtl-lbl{font:500 17px\/1.5 'Raleway', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;color:rgba(255,255,255,0.92);margin:8px auto 0;max-width:520px}\n.rtl-blk-rtlnix60u .rtl-src{font:400 12px\/1.5 'Raleway', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;color:rgba(255,255,255,0.65);margin-top:14px;letter-spacing:0.04em}\n.rtl-blk-rtlnix60u .rtl-src strong{color:#fff;font-weight:700}\n@media(max-width:560px){.rtl-blk-rtlnix60u .rtl-num{font-size:52px}}\n<\/style>\n<div class=\"rtl-num\" data-target=\"70\" data-suffix=\"%\" data-prefix=\"\">0%<\/div>\n<p class=\"rtl-lbl\">SD-WAN purchases will be part of a single-vendor SASE offering by 2028<\/p>\n<div class=\"rtl-src\"><strong>Source:<\/strong> Gartner<\/div>\n<script>(function(){var r=document.currentScript.parentElement;function go(){r.querySelectorAll('.rtl-num').forEach(function(n){var t=parseFloat(n.dataset.target),sx=n.dataset.suffix||'',px=n.dataset.prefix||'',s=Date.now(),d=1500;function tk(){var e=Math.min((Date.now()-s)\/d,1);var k=1-Math.pow(1-e,3);var v=t<10?(t*k).toFixed(1):Math.round(t*k);n.textContent=px+v+sx;if(e<1)requestAnimationFrame(tk);}tk();});}var io=new IntersectionObserver(function(es){es.forEach(function(e){if(e.isIntersecting){go();io.disconnect();}});},{threshold:0.4});io.observe(r);})();<\/script>\n<\/aside>\n\n<p class=\"wp-block-paragraph\">The two acronyms address different issues. SD-WAN determines the best way for traffic to reach its destination. SASE determines who can access what, from where, and under what conditions. The former focuses on links and routes, while the latter focuses on identities, policies, and content inspection. An SD-WAN without built-in security leaves local exit points wide open. A SASE without a robust underlying network protects traffic but does not guarantee its performance. This is why the market is moving toward single-management platforms.      <\/p>\n\n<p class=\"definition wp-block-paragraph\"><strong>SD-WAN (Software-Defined Wide Area Network)<\/strong>: an architecture in which the wide area network is managed via software by a centralized orchestrator, which dynamically coordinates multiple connections and routes traffic based on application requirements and real-time network conditions.<\/p>\n\n<p class=\"definition wp-block-paragraph\"><strong>SASE (Secure Access Service Edge)<\/strong>: an architecture introduced by Gartner in 2019 that combines networking and security functions\u2014such as SD-WAN, Firewall as a Service, ZTNA, CASB, and Secure Web Gateway, to protect locations, remote users, and applications from a single console.<\/p>\n\n<p class=\"wp-block-paragraph\">Originally conceived as a convergence of network and security services, SASE has evolved into a comprehensive architecture designed for enterprises that have migrated their applications and data to the cloud.<\/p>\n\n<h3 id=\"h-il-sase-sostituisce-la-sd-wan-o-la-ingloba\" class=\"wp-block-heading\">Does SASE replace SD-WAN or incorporate it?<\/h3>\n\n<p class=\"wp-block-paragraph\">SASE does not replace SD-WAN: it incorporates it as a network component and complements it with cloud security services. SD-WAN remains the engine that selects the path between offices, data centers, and the cloud, while SASE adds a single policy layer for branch offices, mobile users, and applications. The most advanced platforms also integrate artificial intelligence, which accelerates threat detection, dynamically optimizes network paths, and automates compliance checks.  <\/p>\n\n<p class=\"key-fact\">According to Gartner (Magic Quadrant for SASE Platforms, July 2025), <strong>by 2028, 70% of SD-WAN purchases will be part of a single-vendor SASE offering, up from 25% in 2025<\/strong>. <a data-source=\"Gartner\" href=\"https:\/\/www.gartner.com\/en\/documents\/6152891\" rel=\"noopener\" target=\"_blank\">Gartner\u2019s SASE forecast<\/a> estimates a market size of $28.5 billion in 2028, with an annual growth rate of 26%. Those who upgrade their network today can avoid a second migration by choosing an SD-WAN that is SASE-ready.  <\/p>\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n<h2 id=\"h-l-architettura-di-una-rete-intelligente-underlay-overlay-e-livello-di-sicurezza\" class=\"wp-block-heading\">The Architecture of a Smart Network: Underlay, Overlay, and Security Layer<\/h2>\n\n<p class=\"mini-answer\">A multi-site intelligent network consists of three layers: the underlay of physical links, the SD-WAN overlay that determines the routes, and the SASE layer that applies security policies to each session.<\/p>\n\n\n\n\n<figure class=\"schema-rete-intelligente\" style=\"margin:2em 0\">\n<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 1200 810\" role=\"img\" aria-label=\"Schema di rete aziendale intelligente: underlay di connettivit\u00e0, overlay SD-WAN con orchestratore unico e livello SASE con Firewall as a Service, ZTNA, Secure Web Gateway e CASB\" style=\"width:100%;height:auto;display:block\" font-family=\"Raleway, Calibri, Arial, sans-serif\"><title>Schema di rete aziendale intelligente: underlay di connettivit\u00e0, overlay SD-WAN con orchestratore unico e livello SASE con Firewall as a Service, ZTNA, Secure Web Gateway e CASB<\/title>\n<rect width=\"1200\" height=\"810\" fill=\"#FFFFFF\"><\/rect>\n<text x=\"60\" y=\"62\" font-size=\"15\" font-weight=\"700\" letter-spacing=\"2\" fill=\"#1A7D99\">SCHEMA \u00b7 RETE AZIENDALE INTELLIGENTE<\/text>\n<text x=\"60\" y=\"100\" font-size=\"30\" font-weight=\"700\" fill=\"#043F75\">Come si integrano SD-WAN e SASE<\/text>\n<text x=\"60\" y=\"130\" font-size=\"17\" fill=\"#363D48\">Tre livelli governati da un unico punto di controllo: connessioni, percorsi, sicurezza<\/text>\n<rect x=\"60\" y=\"165\" width=\"850\" height=\"135\" rx=\"14\" fill=\"#043F75\"><\/rect>\n<text x=\"84\" y=\"201\" font-size=\"19\" font-weight=\"800\" letter-spacing=\"1.5\" fill=\"#FFFFFF\">LIVELLO SASE<\/text>\n<text x=\"84\" y=\"225\" font-size=\"15\" fill=\"#FFFFFF\" opacity=\"0.9\">sicurezza erogata dal cloud, vicino all'utente<\/text>\n<rect x=\"89\" y=\"245\" width=\"211\" height=\"34\" rx=\"17\" fill=\"#0B5390\" stroke=\"#5E8DBA\" stroke-width=\"1.2\"><\/rect>\n<text x=\"195\" y=\"267\" font-size=\"15\" font-weight=\"600\" text-anchor=\"middle\" fill=\"#FFFFFF\">Firewall as a Service<\/text>\n<rect x=\"312\" y=\"245\" width=\"64\" height=\"34\" rx=\"17\" fill=\"#0B5390\" stroke=\"#5E8DBA\" stroke-width=\"1.2\"><\/rect>\n<text x=\"344\" y=\"267\" font-size=\"15\" font-weight=\"600\" text-anchor=\"middle\" fill=\"#FFFFFF\">ZTNA<\/text>\n<rect x=\"388\" y=\"245\" width=\"185\" height=\"34\" rx=\"17\" fill=\"#0B5390\" stroke=\"#5E8DBA\" stroke-width=\"1.2\"><\/rect>\n<text x=\"481\" y=\"267\" font-size=\"15\" font-weight=\"600\" text-anchor=\"middle\" fill=\"#FFFFFF\">Secure Web Gateway<\/text>\n<rect x=\"585\" y=\"245\" width=\"64\" height=\"34\" rx=\"17\" fill=\"#0B5390\" stroke=\"#5E8DBA\" stroke-width=\"1.2\"><\/rect>\n<text x=\"617\" y=\"267\" font-size=\"15\" font-weight=\"600\" text-anchor=\"middle\" fill=\"#FFFFFF\">CASB<\/text>\n<rect x=\"661\" y=\"245\" width=\"219\" height=\"34\" rx=\"17\" fill=\"#0B5390\" stroke=\"#5E8DBA\" stroke-width=\"1.2\"><\/rect>\n<text x=\"771\" y=\"267\" font-size=\"15\" font-weight=\"600\" text-anchor=\"middle\" fill=\"#FFFFFF\">Controllo applicazioni<\/text>\n<line x1=\"972\" y1=\"232\" x2=\"995\" y2=\"232\" stroke=\"#6B7685\" stroke-width=\"1.5\"><\/line>\n<circle cx=\"972\" cy=\"232\" r=\"4\" fill=\"#41BBD9\"><\/circle>\n<text x=\"1005\" y=\"215\" font-size=\"16\" font-weight=\"600\" fill=\"#043F75\">Chi accede, a<\/text>\n<text x=\"1005\" y=\"237\" font-size=\"16\" font-weight=\"600\" fill=\"#043F75\">cosa e a quali<\/text>\n<text x=\"1005\" y=\"259\" font-size=\"16\" font-weight=\"600\" fill=\"#043F75\">condizioni<\/text>\n<rect x=\"60\" y=\"335\" width=\"850\" height=\"135\" rx=\"14\" fill=\"#1A7D99\"><\/rect>\n<text x=\"84\" y=\"371\" font-size=\"19\" font-weight=\"800\" letter-spacing=\"1.5\" fill=\"#FFFFFF\">OVERLAY SD-WAN<\/text>\n<text x=\"84\" y=\"395\" font-size=\"15\" fill=\"#FFFFFF\" opacity=\"0.9\">orchestratore centrale, tunnel cifrati, percorso per applicazione<\/text>\n<rect x=\"81\" y=\"415\" width=\"133\" height=\"34\" rx=\"17\" fill=\"#22899F\" stroke=\"#7CC3D3\" stroke-width=\"1.2\"><\/rect>\n<text x=\"147\" y=\"437\" font-size=\"15\" font-weight=\"600\" text-anchor=\"middle\" fill=\"#FFFFFF\">Tunnel IPsec<\/text>\n<rect x=\"226\" y=\"415\" width=\"236\" height=\"34\" rx=\"17\" fill=\"#22899F\" stroke=\"#7CC3D3\" stroke-width=\"1.2\"><\/rect>\n<text x=\"344\" y=\"437\" font-size=\"15\" font-weight=\"600\" text-anchor=\"middle\" fill=\"#FFFFFF\">Routing per applicazione<\/text>\n<rect x=\"474\" y=\"415\" width=\"176\" height=\"34\" rx=\"17\" fill=\"#22899F\" stroke=\"#7CC3D3\" stroke-width=\"1.2\"><\/rect>\n<text x=\"562\" y=\"437\" font-size=\"15\" font-weight=\"600\" text-anchor=\"middle\" fill=\"#FFFFFF\">Soglie di qualit\u00e0<\/text>\n<rect x=\"662\" y=\"415\" width=\"99\" height=\"34\" rx=\"17\" fill=\"#22899F\" stroke=\"#7CC3D3\" stroke-width=\"1.2\"><\/rect>\n<text x=\"712\" y=\"437\" font-size=\"15\" font-weight=\"600\" text-anchor=\"middle\" fill=\"#FFFFFF\">Failover<\/text>\n<rect x=\"773\" y=\"415\" width=\"116\" height=\"34\" rx=\"17\" fill=\"#22899F\" stroke=\"#7CC3D3\" stroke-width=\"1.2\"><\/rect>\n<text x=\"831\" y=\"437\" font-size=\"15\" font-weight=\"600\" text-anchor=\"middle\" fill=\"#FFFFFF\">Zero-touch<\/text>\n<line x1=\"972\" y1=\"402\" x2=\"995\" y2=\"402\" stroke=\"#6B7685\" stroke-width=\"1.5\"><\/line>\n<circle cx=\"972\" cy=\"402\" r=\"4\" fill=\"#41BBD9\"><\/circle>\n<text x=\"1005\" y=\"385\" font-size=\"16\" font-weight=\"600\" fill=\"#043F75\">Come arriva il<\/text>\n<text x=\"1005\" y=\"407\" font-size=\"16\" font-weight=\"600\" fill=\"#043F75\">traffico, con<\/text>\n<text x=\"1005\" y=\"429\" font-size=\"16\" font-weight=\"600\" fill=\"#043F75\">quale qualit\u00e0<\/text>\n<rect x=\"60\" y=\"505\" width=\"850\" height=\"135\" rx=\"14\" fill=\"#D3DEEA\"><\/rect>\n<text x=\"84\" y=\"541\" font-size=\"19\" font-weight=\"800\" letter-spacing=\"1.5\" fill=\"#043F75\">UNDERLAY<\/text>\n<text x=\"84\" y=\"565\" font-size=\"15\" fill=\"#043F75\" opacity=\"0.9\">connettivit\u00e0 fisica multi-tecnologia, anche multi-operatore<\/text>\n<rect x=\"175\" y=\"585\" width=\"150\" height=\"34\" rx=\"17\" fill=\"#FFFFFF\" stroke=\"#ADCAD6\" stroke-width=\"1.2\"><\/rect>\n<text x=\"250\" y=\"607\" font-size=\"15\" font-weight=\"600\" text-anchor=\"middle\" fill=\"#043F75\">Fibra dedicata<\/text>\n<rect x=\"338\" y=\"585\" width=\"133\" height=\"34\" rx=\"17\" fill=\"#FFFFFF\" stroke=\"#ADCAD6\" stroke-width=\"1.2\"><\/rect>\n<text x=\"404\" y=\"607\" font-size=\"15\" font-weight=\"600\" text-anchor=\"middle\" fill=\"#043F75\">IPVPN \/ MPLS<\/text>\n<rect x=\"483\" y=\"585\" width=\"56\" height=\"34\" rx=\"17\" fill=\"#FFFFFF\" stroke=\"#ADCAD6\" stroke-width=\"1.2\"><\/rect>\n<text x=\"511\" y=\"607\" font-size=\"15\" font-weight=\"600\" text-anchor=\"middle\" fill=\"#043F75\">FWA<\/text>\n<rect x=\"551\" y=\"585\" width=\"90\" height=\"34\" rx=\"17\" fill=\"#FFFFFF\" stroke=\"#ADCAD6\" stroke-width=\"1.2\"><\/rect>\n<text x=\"596\" y=\"607\" font-size=\"15\" font-weight=\"600\" text-anchor=\"middle\" fill=\"#043F75\">4G \/ 5G<\/text>\n<rect x=\"653\" y=\"585\" width=\"142\" height=\"34\" rx=\"17\" fill=\"#FFFFFF\" stroke=\"#ADCAD6\" stroke-width=\"1.2\"><\/rect>\n<text x=\"724\" y=\"607\" font-size=\"15\" font-weight=\"600\" text-anchor=\"middle\" fill=\"#043F75\">Satellite LEO<\/text>\n<line x1=\"972\" y1=\"572\" x2=\"995\" y2=\"572\" stroke=\"#6B7685\" stroke-width=\"1.5\"><\/line>\n<circle cx=\"972\" cy=\"572\" r=\"4\" fill=\"#41BBD9\"><\/circle>\n<text x=\"1005\" y=\"555\" font-size=\"16\" font-weight=\"600\" fill=\"#043F75\">Su quali<\/text>\n<text x=\"1005\" y=\"577\" font-size=\"16\" font-weight=\"600\" fill=\"#043F75\">connessioni<\/text>\n<text x=\"1005\" y=\"599\" font-size=\"16\" font-weight=\"600\" fill=\"#043F75\">viaggiano i dati<\/text>\n<rect x=\"660\" y=\"353\" width=\"230\" height=\"40\" rx=\"8\" fill=\"#02284B\"><\/rect>\n<text x=\"775\" y=\"379\" font-size=\"15\" font-weight=\"700\" text-anchor=\"middle\" fill=\"#FFFFFF\">Orchestratore unico<\/text>\n<rect x=\"75\" y=\"700\" width=\"190\" height=\"78\" rx=\"12\" fill=\"#FFFFFF\" stroke=\"#043F75\" stroke-width=\"2\"><\/rect>\n<text x=\"170\" y=\"733\" font-size=\"17\" font-weight=\"700\" text-anchor=\"middle\" fill=\"#043F75\">Sede centrale<\/text>\n<text x=\"170\" y=\"757\" font-size=\"15\" text-anchor=\"middle\" fill=\"#363D48\">e data center<\/text>\n<rect x=\"300\" y=\"700\" width=\"190\" height=\"78\" rx=\"12\" fill=\"#FFFFFF\" stroke=\"#043F75\" stroke-width=\"2\"><\/rect>\n<text x=\"395\" y=\"733\" font-size=\"17\" font-weight=\"700\" text-anchor=\"middle\" fill=\"#043F75\">Filiali e<\/text>\n<text x=\"395\" y=\"757\" font-size=\"15\" text-anchor=\"middle\" fill=\"#363D48\">punti vendita<\/text>\n<rect x=\"525\" y=\"700\" width=\"190\" height=\"78\" rx=\"12\" fill=\"#FFFFFF\" stroke=\"#043F75\" stroke-width=\"2\"><\/rect>\n<text x=\"620\" y=\"733\" font-size=\"17\" font-weight=\"700\" text-anchor=\"middle\" fill=\"#043F75\">Cloud<\/text>\n<text x=\"620\" y=\"757\" font-size=\"15\" text-anchor=\"middle\" fill=\"#363D48\">IaaS e SaaS<\/text>\n<rect x=\"750\" y=\"700\" width=\"190\" height=\"78\" rx=\"12\" fill=\"#FFFFFF\" stroke=\"#043F75\" stroke-width=\"2\"><\/rect>\n<text x=\"845\" y=\"733\" font-size=\"17\" font-weight=\"700\" text-anchor=\"middle\" fill=\"#043F75\">Utenti<\/text>\n<text x=\"845\" y=\"757\" font-size=\"15\" text-anchor=\"middle\" fill=\"#363D48\">remoti<\/text>\n<line x1=\"170\" y1=\"700\" x2=\"170\" y2=\"640\" stroke=\"#41BBD9\" stroke-width=\"3\"><\/line>\n<circle cx=\"170\" cy=\"640\" r=\"5\" fill=\"#41BBD9\"><\/circle>\n<line x1=\"395\" y1=\"700\" x2=\"395\" y2=\"640\" stroke=\"#41BBD9\" stroke-width=\"3\"><\/line>\n<circle cx=\"395\" cy=\"640\" r=\"5\" fill=\"#41BBD9\"><\/circle>\n<line x1=\"620\" y1=\"700\" x2=\"620\" y2=\"640\" stroke=\"#41BBD9\" stroke-width=\"3\"><\/line>\n<circle cx=\"620\" cy=\"640\" r=\"5\" fill=\"#41BBD9\"><\/circle>\n<path d=\"M 940 680 L 940 232 L 916 232\" fill=\"none\" stroke=\"#41BBD9\" stroke-width=\"3\" stroke-dasharray=\"7 6\"><\/path>\n<polygon points=\"910,232 922,225 922,239\" fill=\"#41BBD9\"><\/polygon>\n<line x1=\"845\" y1=\"700\" x2=\"845\" y2=\"680\" stroke=\"#41BBD9\" stroke-width=\"3\" stroke-dasharray=\"7 6\"><\/line>\n<path d=\"M 845 680 L 940 680\" fill=\"none\" stroke=\"#41BBD9\" stroke-width=\"3\" stroke-dasharray=\"7 6\"><\/path>\n<text x=\"955\" y=\"698\" font-size=\"14\" font-weight=\"700\" fill=\"#1A7D99\">Accesso ZTNA<\/text>\n<text x=\"955\" y=\"718\" font-size=\"14\" font-weight=\"700\" fill=\"#1A7D99\">diretto al SASE<\/text>\n<line x1=\"170\" y1=\"335\" x2=\"170\" y2=\"308\" stroke=\"#41BBD9\" stroke-width=\"3\"><\/line>\n<polygon points=\"163,310 177,310 170,300\" fill=\"#41BBD9\"><\/polygon>\n<line x1=\"395\" y1=\"335\" x2=\"395\" y2=\"308\" stroke=\"#41BBD9\" stroke-width=\"3\"><\/line>\n<polygon points=\"388,310 402,310 395,300\" fill=\"#41BBD9\"><\/polygon>\n<line x1=\"620\" y1=\"335\" x2=\"620\" y2=\"308\" stroke=\"#41BBD9\" stroke-width=\"3\"><\/line>\n<polygon points=\"613,310 627,310 620,300\" fill=\"#41BBD9\"><\/polygon>\n<line x1=\"170\" y1=\"505\" x2=\"170\" y2=\"478\" stroke=\"#41BBD9\" stroke-width=\"3\"><\/line>\n<polygon points=\"163,480 177,480 170,470\" fill=\"#41BBD9\"><\/polygon>\n<line x1=\"395\" y1=\"505\" x2=\"395\" y2=\"478\" stroke=\"#41BBD9\" stroke-width=\"3\"><\/line>\n<polygon points=\"388,480 402,480 395,470\" fill=\"#41BBD9\"><\/polygon>\n<line x1=\"620\" y1=\"505\" x2=\"620\" y2=\"478\" stroke=\"#41BBD9\" stroke-width=\"3\"><\/line>\n<polygon points=\"613,480 627,480 620,470\" fill=\"#41BBD9\"><\/polygon>\n<\/svg>\n<figcaption style=\"font-size:0.9em;margin-top:0.6em\">The three layers of a smart network: physical connections, SD-WAN, which selects the route, and SASE, which protects remote access and users.<\/figcaption>\n<\/figure>\n\n\n\n\n<p class=\"wp-block-paragraph\">At the core is the underlay\u2014that is, the physical connections at each location: dedicated fiber, IPVPN (IP Virtual Private Network) circuits, FWA (Fixed Wireless Access) connections, 4G and 5G networks, and satellite. Above this operates the SD-WAN overlay: the devices create IPsec-encrypted tunnels between locations and to the cloud, measure the quality of each line, and reroute traffic in real time. At the very top is the SASE layer, which inspects traffic and verifies the identity of users. A single orchestrator manages all three layers.   <\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Underlay<\/strong>: fiber, IPVPN, FWA, 4G\/5G, and satellite, including from different providers.<\/li>\n\n\n\n<li><strong>SD-WAN Overlay<\/strong>: encrypted tunnels, latency and jitter measurement, dynamic route selection.<\/li>\n\n\n\n<li><strong>SASE Layer<\/strong>: cloud firewall, zero-trust access, web filtering, SaaS application control.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n<h3 id=\"h-dove-si-collocano-sd-wan-e-sase-nello-schema-di-rete\" class=\"wp-block-heading\">Where do SD-WAN and SASE fit into the network architecture?<\/h3>\n\n<p class=\"wp-block-paragraph\">SD-WAN is located at the intermediate layer, between the physical links and the applications, while SASE is located at the top layer, between users and the resources they access. SD-WAN ensures that traffic arrives with the required quality; SASE ensures that only authorized, threat-free traffic arrives. <\/p>\n\n<p class=\"takeaway\">Mapping the network across the three levels helps us understand which components need to be replaced immediately and which can remain in service.<\/p>\n\n<h2 id=\"h-convergenza-rete-e-sicurezza-firewall-as-a-service-e-zero-trust-network-access\" class=\"wp-block-heading\">Network and Security Convergence: Firewall as a Service and Zero Trust Network Access<\/h2>\n\n<p class=\"mini-answer\">Zero trust is a security model that does not grant implicit trust to any user or device: Firewall as a Service applies its controls to network traffic, while zero trust network access applies them to application access.<\/p>\n\n<p class=\"wp-block-paragraph\">With cloud-based applications and branch offices that connect directly to the Internet, security can no longer be concentrated at a single point in the network. The convergence of networking and security distributes controls along the entire path of traffic and governs them with a single set of policies. <\/p>\n\n<p class=\"definition\"><strong>Zero trust<\/strong>: a security model based on the principle of \"never trust, always verify,\" in which every access request is authorized only after verifying the user's identity, device, and context.<\/p>\n\n<p class=\"wp-block-paragraph\">The zero-trust model is based on three principles:<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Continuous verification<\/strong>: Identity and device are verified with every login.<\/li>\n\n\n\n<li><strong>Least privilege<\/strong>: Each user has access only to the resources necessary for their role.<\/li>\n\n\n\n<li><strong>Micro-segmentation<\/strong>: Resources are isolated, so any compromise remains contained.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n<h3 id=\"h-che-cosa-fa-il-firewall-as-a-service\" class=\"wp-block-heading\">What does Firewall as a Service do?<\/h3>\n\n<p class=\"wp-block-paragraph\">Firewall as a Service is a next-generation firewall delivered from the cloud rather than from an on-premises device. It inspects incoming and outgoing traffic, applies centrally defined rules, and blocks threats using intrusion prevention, web filtering, anti-malware, and application control. Policies are consistent across locations and users, and capacity scales with traffic volumes without requiring new hardware. <a href=\"https:\/\/retelit.it\/en\/cyber-security\/firewall-as-a-service\/\">Firewall as a Service<\/a> integrates with SD-WAN and a <a href=\"https:\/\/retelit.it\/en\/cyber-security\/mdr-managed-detection-response\/\">Managed Detection and Response<\/a> service for continuous monitoring.   <\/p>\n\n<h3 id=\"h-che-cosa-fa-lo-ztna-e-perche-supera-la-vpn-tradizionale\" class=\"wp-block-heading\">What does ZTNA do, and why is it better than a traditional VPN?<\/h3>\n\n<p class=\"wp-block-paragraph\">ZTNA (Zero Trust Network Access) connects the user to a single authorized application, not to the entire network. Before establishing the connection, it verifies the user\u2019s identity and device; the applications remain invisible to those without permissions. A traditional VPN (Virtual Private Network), on the other hand, grants the authenticated user access to the network: with stolen credentials, an attacker can move freely between systems. For NIS2 (Network and Information Security) entities, ZTNA supports the access and authentication measures outlined in Article 21, as indicated<a data-source=\"ACN\" href=\"https:\/\/www.acn.gov.it\/portale\/nis\" rel=\"noopener\" target=\"_blank\">by the National Cybersecurity Agency<\/a> and the <a href=\"https:\/\/digital-strategy.ec.europa.eu\/en\/policies\/nis2-directive\" rel=\"noopener\" target=\"_blank\">European Commission<\/a>.   <\/p>\n\n<p class=\"key-fact\"><a data-source=\"ENISA\" href=\"https:\/\/www.enisa.europa.eu\/publications\/enisa-threat-landscape-2025\" rel=\"noopener\" target=\"_blank\">The ENISA Threat Landscape 2025<\/a> analyzed 4,875 incidents: <strong>phishing is the initial intrusion vector in approximately 60% of cases<\/strong>.<\/p>\n\n<h2 id=\"h-sd-wan-vs-mpls-vs-sase-criteri-di-scelta-per-la-rete-enterprise\" class=\"wp-block-heading\">SD-WAN vs. MPLS vs. SASE: Selection Criteria for Enterprise Networks<\/h2>\n\n<p class=\"mini-answer\">MPLS offers predictable but inflexible quality; SD-WAN adds agility and intelligent use of multiple links; SASE extends protection to users and the cloud: the choice depends on applications, the number of locations, and security requirements.<\/p>\n\n<p class=\"wp-block-paragraph\">The three models are not mutually exclusive alternatives. Many enterprise networks combine an MPLS circuit for the most sensitive traffic, an SD-WAN that orchestrates all connections, and SASE services for remote users and local access points. This comparison should be viewed in light of three key factors: operational complexity, exposure to cyber threats, and the balance between cost and performance.  <\/p>\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Criterion<\/th><th>Traditional MPLS<\/th><th>SD-WAN<\/th><th>SASE<\/th><\/tr><\/thead><tbody><tr><td>Objective<\/td><td>Connecting locations with guaranteed quality<\/td><td>Optimizing Routes and Applications<\/td><td>Combining Networking and Security in the Cloud<\/td><\/tr><tr><td>Cloud Access<\/td><td>Headquarters Address<\/td><td>Local Exit with Optimal Route<\/td><td>Local Output Inspected from the Cloud<\/td><\/tr><tr><td>Available lines<\/td><td>Operator Circuits<\/td><td>Fiber, radio, 4G\/5G, satellite, MPLS<\/td><td>SD-WAN users plus remote users<\/td><\/tr><tr><td>Safety<\/td><td>Circuit isolation, central firewall<\/td><td>Encrypted tunnels, on-premises firewalls<\/td><td>Cloud firewall, ZTNA, CASB, web filter<\/td><\/tr><tr><td>New Locations<\/td><td>Weeks, with technical support<\/td><td>Zero-touch, automatic configuration<\/td><td>Instant for remote users<\/td><\/tr><tr><td>Management<\/td><td>Device by device<\/td><td>Central Orchestrator<\/td><td>Single Network and Security Console<\/td><\/tr><tr><td>Cost Model<\/td><td>Bandwidth fee, not very flexible<\/td><td>A mix of lines and standards for the apparatus<\/td><td>Subscription per user or per location<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<h3 id=\"h-la-sd-wan-sostituisce-completamente-l-mpls\" class=\"wp-block-heading\">Does SD-WAN completely replace MPLS?<\/h3>\n\n<p class=\"wp-block-paragraph\">SD-WAN does not necessarily replace MPLS; it often complements it as one of the available options. Voice, video, and business applications can remain on <a href=\"https:\/\/retelit.it\/en\/broadband-ultrabroadband-connectivity\/ipvpn\/\">the IPVPN network<\/a>, while traffic to the Internet and public clouds exits through the local access point. <\/p>\n\n<h2 id=\"h-dalla-sd-wan-al-sase-un-percorso-di-adozione-graduale\" class=\"wp-block-heading\">From SD-WAN to SASE: A Gradual Adoption Path<\/h2>\n\n<p class=\"mini-answer\">The transition to SD-WAN and SASE is proceeding gradually and generally involves the following areas: application mapping, a redundant underlay, an SD-WAN overlay with built-in security, and the extension of the zero-trust model to users and the cloud.<\/p>\n\n<p class=\"wp-block-paragraph\">A phased approach reduces risks and minimizes the initial investment. SD-WAN is rolled out to a pilot group of locations, while the rest of the network remains unchanged. SASE features are enabled first on Internet egress points and then on remote access points.  <\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Assessment and application mapping<\/strong>: inventory of locations, lines, critical applications, and data flows to data centers and the cloud.<\/li>\n\n\n\n<li><strong>Redundant multi-technology underlay<\/strong>: at least two different access methods for critical locations, including fiber, radio, mobile, and satellite.<\/li>\n\n\n\n<li><strong>SD-WAN overlay with built-in security<\/strong>: devices with next-generation firewalls, application-based rules, and service thresholds.<\/li>\n\n\n\n<li><strong>SASE and Zero Trust<\/strong>: Cloud-based protection for on-premises egress and zero-trust access for remote users.<\/li>\n<\/ul>\n\n<h3 id=\"h-come-si-migra-una-rete-multisede-senza-fermare-le-sedi\" class=\"wp-block-heading\">How do you migrate a multi-site network without taking the sites offline?<\/h3>\n\n<p class=\"wp-block-paragraph\">A multi-site network is migrated without downtime by activating the SD-WAN site by site, in parallel with the existing network. With zero-touch provisioning, the device arrives at the branch, connects to power and the Internet, and downloads the configuration from the orchestrator. A real-world case managed by Retelit in the logistics sector\u2014involving over 200 locations and critical 24\/7 data flows\u2014followed this approach. Each location received redundant connectivity: fiber, last-mile connections from other carriers, radio links, and LTE\/5G backup, with the customer\u2019s SD-WAN orchestrating the network. Similar approaches were used in case studies on a <a href=\"https:\/\/retelit.it\/en\/case-study\/energia-rete-resiliente-mpls-sd-wan\/\">resilient MPLS and SD-WAN network in the energy sector<\/a> and on<a href=\"https:\/\/retelit.it\/en\/case-study\/retail-fashion-infrastruttura-mpls-nazionale-e-connettivita-gestita\/\">a national infrastructure for the fashion retail industry<\/a>.    <\/p>\n\n<p class=\"takeaway\">A pilot program at a few representative locations allows us to validate rules and thresholds before extending them to the entire network.<\/p>\n\n<h2 id=\"h-servizi-gestiti-per-sd-wan-sase-e-sicurezza-cloud\" class=\"wp-block-heading\">Managed Services for SD-WAN, SASE, and Cloud Security<\/h2>\n\n<p class=\"mini-answer\">A managed SD-WAN and cloud security service consolidates networking and security functions with a single provider or a small number of partners: this simplifies management and gives the organization access to integrated expertise in design, transport, and security.<\/p>\n\n<p class=\"wp-block-paragraph\">The SASE model was designed to consolidate, into a few services provided by a single vendor or a limited number of partners, networking and security functions that would otherwise require many different vendors. Fewer platforms to integrate mean faster operations and simpler management. In a managed service model, the value increases even further, because the service is combined with complementary expertise in transport and networking: the organization receives dedicated solutions, expert infrastructure design, and integrated services all under a single umbrella.  <\/p>\n\n<h3 id=\"h-come-si-integrano-sd-wan-e-sicurezza-in-un-servizio-gestito\" class=\"wp-block-heading\">How are SD-WAN and security integrated into a managed service?<\/h3>\n\n<p class=\"wp-block-paragraph\">In a managed service, the provider designs, deploys, and maintains both the network and security over time. Security features, such as firewalls, intrusion prevention, web filtering, and anti-malware, reside within the SD-WAN devices installed at each location, while a central orchestrator enforces uniform policies across the entire network. Traffic to the Internet and the cloud passes through Firewall as a Service, and a Security Operations Center (SOC) continuously monitors events and threats. Management can be entrusted entirely to the provider\u2019s specialists or shared with the internal IT team, which retains visibility and control over configurations.   <\/p>\n\n<p class=\"wp-block-paragraph\">The infrastructure underpinning the service is also a strategic element, because it is essential for companies to know where their data is processed and stored: In its <a data-source=\"Gartner\" href=\"https:\/\/www.gartner.com\/en\/documents\/8183329\" target=\"_blank\" rel=\"noopener\">2026 Magic Quadrant for SASE Platforms<\/a>, Gartner identifies this aspect as one of the new criteria for selecting platforms. In Italy, Retelit delivers its <a href=\"https:\/\/retelit.it\/en\/broadband-ultrabroadband-connectivity\/sd-wan\/\">SD-WAN and managed security solutions<\/a> on a proprietary infrastructure that includes a 47,000-km backbone network with capacity of up to 800 Gbps and a dedicated SOC. <\/p>\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n<h2 id=\"h-domande-frequenti-su-sd-wan-e-sase-per-le-organizzazioni-enterprise\" class=\"wp-block-heading\">Frequently Asked Questions About SD-WAN and SASE for Enterprise Organizations<\/h2>\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1791122833683\"><strong class=\"schema-faq-question\">What is the difference between SD-WAN and SASE?<\/strong> <p class=\"schema-faq-answer\">SD-WAN manages the network between locations and selects the best path for each application. SASE combines networking and security into a cloud service that also protects remote users and SaaS applications. SD-WAN is a component of SASE.  <\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791122853205\"><strong class=\"schema-faq-question\">Is an SD-WAN network secure even without SASE?<\/strong> <p class=\"schema-faq-answer\">An SD-WAN with a built-in next-generation firewall protects branch offices and encrypts traffic between them. SASE is useful when many users work remotely or when consistent policies are needed for SaaS. <\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791122875019\"><strong class=\"schema-faq-question\">Do SD-WAN and SASE help ensure compliance with NIS2?<\/strong> <p class=\"schema-faq-answer\">The two architectures support various requirements of Article 21 of NIS2: network security, access control, and monitoring. Compliance, however, remains a broader organizational process. <\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791122899341\"><strong class=\"schema-faq-question\">Is it possible to implement SD-WAN while keeping existing connectivity contracts?<\/strong> <p class=\"schema-faq-answer\">SD-WAN works with connections from different service providers and does not require all access points to be migrated immediately. The underlay is then streamlined when the contracts expire. <\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791122968493\"><strong class=\"schema-faq-question\">What is meant by \"single-vendor SASE\"?<\/strong> <p class=\"schema-faq-answer\">A single-vendor SASE solution is one in which SD-WAN and cloud security are provided by the same vendor and managed from a single console. The dual-vendor approach, on the other hand, involves two specialists\u2014one for the network and one for security. <\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791122995055\"><strong class=\"schema-faq-question\">Is a managed SD-WAN or a self-managed SD-WAN better?<\/strong> <p class=\"schema-faq-answer\">Managed SD-WAN frees the IT team from day-to-day network operations. Self-managed SD-WAN is suitable for organizations with in-house networking expertise. <\/p> <\/div> <\/div>\n\n<script type=\"application\/ld+json\">{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Qual \u00e8 la differenza tra SD-WAN e SASE?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"La SD-WAN gestisce la rete tra le sedi e sceglie il percorso migliore per ogni applicazione. Il SASE unisce rete e sicurezza in un servizio cloud che protegge anche utenti remoti e applicazioni SaaS. La SD-WAN \u00e8 una componente del SASE.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Una rete SD-WAN \u00e8 sicura anche senza SASE?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Una SD-WAN con firewall di nuova generazione integrato protegge le sedi e cifra il traffico tra di esse. Il SASE serve quando molti utenti lavorano da remoto o servono policy uniformi sul SaaS.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"SD-WAN e SASE aiutano a rispettare la NIS2?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"SD-WAN e SASE supportano diverse misure dell'articolo 21 della NIS2: sicurezza delle reti, controllo degli accessi, monitoraggio. La conformit\u00e0 resta comunque un processo organizzativo pi\u00f9 ampio.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Si pu\u00f2 adottare la SD-WAN mantenendo i contratti di connettivit\u00e0 esistenti?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"La SD-WAN funziona sopra linee di operatori diversi e non obbliga a migrare subito tutti gli accessi. L'underlay si razionalizza poi alla scadenza dei contratti.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Che cosa si intende per SASE single-vendor?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Il SASE single-vendor \u00e8 un'offerta in cui SD-WAN e sicurezza cloud arrivano dallo stesso fornitore e si gestiscono da una console unica. L'approccio dual-vendor affianca invece due specialisti, uno per la rete e uno per la sicurezza.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Meglio una SD-WAN gestita o in autonomia?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"La SD-WAN gestita libera il team IT dall'esercizio quotidiano della rete. La gestione in autonomia \u00e8 adatta a chi ha competenze di rete interne.\"\n      }\n    }\n  ]\n}\n<\/script>\n\n<p class=\"wp-block-paragraph\"><em>With contributions from <a href=\"https:\/\/www.linkedin.com\/in\/renzo-cavalli-72483224?utm_source=share_via&amp;utm_content=profile&amp;utm_medium=memb\">Renzo Cavalli<\/a>, Product Marketing &amp; Go to Market, Retelit<\/em><\/p>\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>SD-WAN (Software-Defined Wide Area Network) and SASE (Secure Access Service Edge) integrate networking and security into a unified architecture, optimizing connectivity between locations and applying Zero Trust policies to users, devices, and cloud resources. Key points: SD-WAN optimizes connectivity through intelligent traffic routing and centralized policy management. SASE integrates networking and security into a cloud-native [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":7315,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_meta-robots-noindex":"","_yoast_wpseo_meta-robots-nofollow":"","_yoast_wpseo_canonical":"","wpai_generated_summary":"","footnotes":"","_retelit_schema_faq":""},"categories":[16],"tags":[143,185],"class_list":["post-7313","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-magazine","tag-cloud","tag-networks-and-security"],"retelit_translations":{"it":6739,"en":7313,"de":null,"trid":3559},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.7 (Yoast SEO v28.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>SD-WAN and SASE: The New Networking Paradigm<\/title>\n<meta name=\"description\" content=\"SD-WAN and SASE in Enterprise Networking: How Networking and Security Converge in Enterprise Environments, and Differences from MPLS and Zero Trust\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SD-WAN and SASE: The New Paradigm in Enterprise Networking\" \/>\n<meta property=\"og:description\" content=\"SD-WAN and SASE in Enterprise Networking: How Networking and Security Converge in Enterprise Environments, and Differences from MPLS and Zero Trust\" \/>\n<meta property=\"og:url\" content=\"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/\" \/>\n<meta property=\"og:site_name\" content=\"Retelit\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.linkedin.com\/company\/155313\/\" \/>\n<meta property=\"article:published_time\" content=\"2026-10-09T07:00:25+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-18T18:58:18+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/retelit.it\/wp-content\/uploads\/sd-wan-sase-networking-aziendale-B.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1600\" \/>\n\t<meta property=\"og:image:height\" content=\"900\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Tijana Radojicic\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Tijana Radojicic\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"13 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/\"},\"author\":{\"name\":\"Tijana Radojicic\",\"@id\":\"https:\\\/\\\/www.retelit.it\\\/en\\\/#\\\/schema\\\/person\\\/92fedcb13a9581740812a88c2ea1adeb\"},\"headline\":\"SD-WAN and SASE: The New Paradigm in Enterprise Networking\",\"datePublished\":\"2026-10-09T07:00:25+00:00\",\"dateModified\":\"2026-10-18T18:58:18+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/\"},\"wordCount\":2691,\"publisher\":{\"@id\":\"https:\\\/\\\/www.retelit.it\\\/en\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/retelit.it\\\/wp-content\\\/uploads\\\/sd-wan-sase-networking-aziendale-B.jpg\",\"keywords\":[\"Cloud\",\"Networks and Security\"],\"articleSection\":[\"Magazine\"],\"inLanguage\":\"en-US\"},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/\",\"url\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/\",\"name\":\"SD-WAN and SASE: The New Networking Paradigm\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.retelit.it\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/retelit.it\\\/wp-content\\\/uploads\\\/sd-wan-sase-networking-aziendale-B.jpg\",\"datePublished\":\"2026-10-09T07:00:25+00:00\",\"dateModified\":\"2026-10-18T18:58:18+00:00\",\"description\":\"SD-WAN and SASE in Enterprise Networking: How Networking and Security Converge in Enterprise Environments, and Differences from MPLS and Zero Trust\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/#breadcrumb\"},\"mainEntity\":[{\"@id\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/#faq-question-1791122833683\"},{\"@id\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/#faq-question-1791122853205\"},{\"@id\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/#faq-question-1791122875019\"},{\"@id\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/#faq-question-1791122899341\"},{\"@id\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/#faq-question-1791122968493\"},{\"@id\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/#faq-question-1791122995055\"}],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/#primaryimage\",\"url\":\"https:\\\/\\\/retelit.it\\\/wp-content\\\/uploads\\\/sd-wan-sase-networking-aziendale-B.jpg\",\"contentUrl\":\"https:\\\/\\\/retelit.it\\\/wp-content\\\/uploads\\\/sd-wan-sase-networking-aziendale-B.jpg\",\"width\":1600,\"height\":900},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/retelit.it\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"SD-WAN and SASE: The New Paradigm in Enterprise Networking\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.retelit.it\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/www.retelit.it\\\/en\\\/\",\"name\":\"Retelit\",\"description\":\"Born to B2B\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.retelit.it\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.retelit.it\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.retelit.it\\\/en\\\/#organization\",\"name\":\"Retelit\",\"url\":\"https:\\\/\\\/www.retelit.it\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.retelit.it\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/retelit.it\\\/wp-content\\\/uploads\\\/Logo-retelit.png\",\"contentUrl\":\"https:\\\/\\\/retelit.it\\\/wp-content\\\/uploads\\\/Logo-retelit.png\",\"width\":884,\"height\":400,\"caption\":\"Retelit\"},\"image\":{\"@id\":\"https:\\\/\\\/www.retelit.it\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.linkedin.com\\\/company\\\/155313\\\/\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.retelit.it\\\/en\\\/#\\\/schema\\\/person\\\/92fedcb13a9581740812a88c2ea1adeb\",\"name\":\"Tijana Radojicic\",\"url\":\"https:\\\/\\\/retelit.it\\\/en\\\/author\\\/tijana-radojicic\\\/\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/#faq-question-1791122833683\",\"position\":1,\"url\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/#faq-question-1791122833683\",\"name\":\"What is the difference between SD-WAN and SASE?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"SD-WAN manages the network between locations and selects the best path for each application. SASE combines networking and security into a cloud service that also protects remote users and SaaS applications. SD-WAN is a component of SASE.  \",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/#faq-question-1791122853205\",\"position\":2,\"url\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/#faq-question-1791122853205\",\"name\":\"Is an SD-WAN network secure even without SASE?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"An SD-WAN with a built-in next-generation firewall protects branch offices and encrypts traffic between them. SASE is useful when many users work remotely or when consistent policies are needed for SaaS. \",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/#faq-question-1791122875019\",\"position\":3,\"url\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/#faq-question-1791122875019\",\"name\":\"Do SD-WAN and SASE help ensure compliance with NIS2?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The two architectures support various requirements of Article 21 of NIS2: network security, access control, and monitoring. Compliance, however, remains a broader organizational process. \",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/#faq-question-1791122899341\",\"position\":4,\"url\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/#faq-question-1791122899341\",\"name\":\"Is it possible to implement SD-WAN while keeping existing connectivity contracts?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"SD-WAN works with connections from different service providers and does not require all access points to be migrated immediately. The underlay is then streamlined when the contracts expire. \",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/#faq-question-1791122968493\",\"position\":5,\"url\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/#faq-question-1791122968493\",\"name\":\"What is meant by \\\"single-vendor SASE\\\"?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A single-vendor SASE solution is one in which SD-WAN and cloud security are provided by the same vendor and managed from a single console. The dual-vendor approach, on the other hand, involves two specialists\u2014one for the network and one for security. \",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/#faq-question-1791122995055\",\"position\":6,\"url\":\"https:\\\/\\\/retelit.it\\\/en\\\/magazine\\\/2026\\\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\\\/#faq-question-1791122995055\",\"name\":\"Is a managed SD-WAN or a self-managed SD-WAN better?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Managed SD-WAN frees the IT team from day-to-day network operations. Self-managed SD-WAN is suitable for organizations with in-house networking expertise. \",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"SD-WAN and SASE: The New Networking Paradigm","description":"SD-WAN and SASE in Enterprise Networking: How Networking and Security Converge in Enterprise Environments, and Differences from MPLS and Zero Trust","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/","og_locale":"en_US","og_type":"article","og_title":"SD-WAN and SASE: The New Paradigm in Enterprise Networking","og_description":"SD-WAN and SASE in Enterprise Networking: How Networking and Security Converge in Enterprise Environments, and Differences from MPLS and Zero Trust","og_url":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/","og_site_name":"Retelit","article_publisher":"https:\/\/www.linkedin.com\/company\/155313\/","article_published_time":"2026-10-09T07:00:25+00:00","article_modified_time":"2026-10-18T18:58:18+00:00","og_image":[{"width":1600,"height":900,"url":"https:\/\/retelit.it\/wp-content\/uploads\/sd-wan-sase-networking-aziendale-B.jpg","type":"image\/jpeg"}],"author":"Tijana Radojicic","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Tijana Radojicic","Est. reading time":"13 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/#article","isPartOf":{"@id":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/"},"author":{"name":"Tijana Radojicic","@id":"https:\/\/www.retelit.it\/en\/#\/schema\/person\/92fedcb13a9581740812a88c2ea1adeb"},"headline":"SD-WAN and SASE: The New Paradigm in Enterprise Networking","datePublished":"2026-10-09T07:00:25+00:00","dateModified":"2026-10-18T18:58:18+00:00","mainEntityOfPage":{"@id":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/"},"wordCount":2691,"publisher":{"@id":"https:\/\/www.retelit.it\/en\/#organization"},"image":{"@id":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/#primaryimage"},"thumbnailUrl":"https:\/\/retelit.it\/wp-content\/uploads\/sd-wan-sase-networking-aziendale-B.jpg","keywords":["Cloud","Networks and Security"],"articleSection":["Magazine"],"inLanguage":"en-US"},{"@type":["WebPage","FAQPage"],"@id":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/","url":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/","name":"SD-WAN and SASE: The New Networking Paradigm","isPartOf":{"@id":"https:\/\/www.retelit.it\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/#primaryimage"},"image":{"@id":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/#primaryimage"},"thumbnailUrl":"https:\/\/retelit.it\/wp-content\/uploads\/sd-wan-sase-networking-aziendale-B.jpg","datePublished":"2026-10-09T07:00:25+00:00","dateModified":"2026-10-18T18:58:18+00:00","description":"SD-WAN and SASE in Enterprise Networking: How Networking and Security Converge in Enterprise Environments, and Differences from MPLS and Zero Trust","breadcrumb":{"@id":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/#breadcrumb"},"mainEntity":[{"@id":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/#faq-question-1791122833683"},{"@id":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/#faq-question-1791122853205"},{"@id":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/#faq-question-1791122875019"},{"@id":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/#faq-question-1791122899341"},{"@id":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/#faq-question-1791122968493"},{"@id":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/#faq-question-1791122995055"}],"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/#primaryimage","url":"https:\/\/retelit.it\/wp-content\/uploads\/sd-wan-sase-networking-aziendale-B.jpg","contentUrl":"https:\/\/retelit.it\/wp-content\/uploads\/sd-wan-sase-networking-aziendale-B.jpg","width":1600,"height":900},{"@type":"BreadcrumbList","@id":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/retelit.it\/en\/"},{"@type":"ListItem","position":2,"name":"SD-WAN and SASE: The New Paradigm in Enterprise Networking"}]},{"@type":"WebSite","@id":"https:\/\/www.retelit.it\/en\/#website","url":"https:\/\/www.retelit.it\/en\/","name":"Retelit","description":"Born to B2B","publisher":{"@id":"https:\/\/www.retelit.it\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.retelit.it\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.retelit.it\/en\/#organization","name":"Retelit","url":"https:\/\/www.retelit.it\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.retelit.it\/en\/#\/schema\/logo\/image\/","url":"https:\/\/retelit.it\/wp-content\/uploads\/Logo-retelit.png","contentUrl":"https:\/\/retelit.it\/wp-content\/uploads\/Logo-retelit.png","width":884,"height":400,"caption":"Retelit"},"image":{"@id":"https:\/\/www.retelit.it\/en\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.linkedin.com\/company\/155313\/"]},{"@type":"Person","@id":"https:\/\/www.retelit.it\/en\/#\/schema\/person\/92fedcb13a9581740812a88c2ea1adeb","name":"Tijana Radojicic","url":"https:\/\/retelit.it\/en\/author\/tijana-radojicic\/"},{"@type":"Question","@id":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/#faq-question-1791122833683","position":1,"url":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/#faq-question-1791122833683","name":"What is the difference between SD-WAN and SASE?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"SD-WAN manages the network between locations and selects the best path for each application. SASE combines networking and security into a cloud service that also protects remote users and SaaS applications. SD-WAN is a component of SASE.  ","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/#faq-question-1791122853205","position":2,"url":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/#faq-question-1791122853205","name":"Is an SD-WAN network secure even without SASE?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"An SD-WAN with a built-in next-generation firewall protects branch offices and encrypts traffic between them. SASE is useful when many users work remotely or when consistent policies are needed for SaaS. ","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/#faq-question-1791122875019","position":3,"url":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/#faq-question-1791122875019","name":"Do SD-WAN and SASE help ensure compliance with NIS2?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"The two architectures support various requirements of Article 21 of NIS2: network security, access control, and monitoring. Compliance, however, remains a broader organizational process. ","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/#faq-question-1791122899341","position":4,"url":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/#faq-question-1791122899341","name":"Is it possible to implement SD-WAN while keeping existing connectivity contracts?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"SD-WAN works with connections from different service providers and does not require all access points to be migrated immediately. The underlay is then streamlined when the contracts expire. ","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/#faq-question-1791122968493","position":5,"url":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/#faq-question-1791122968493","name":"What is meant by \"single-vendor SASE\"?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"A single-vendor SASE solution is one in which SD-WAN and cloud security are provided by the same vendor and managed from a single console. The dual-vendor approach, on the other hand, involves two specialists\u2014one for the network and one for security. ","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/#faq-question-1791122995055","position":6,"url":"https:\/\/retelit.it\/en\/magazine\/2026\/sd-wan-and-sase-the-new-paradigm-in-enterprise-networking\/#faq-question-1791122995055","name":"Is a managed SD-WAN or a self-managed SD-WAN better?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Managed SD-WAN frees the IT team from day-to-day network operations. Self-managed SD-WAN is suitable for organizations with in-house networking expertise. ","inLanguage":"en-US"},"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/retelit.it\/en\/wp-json\/wp\/v2\/posts\/7313","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/retelit.it\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/retelit.it\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/retelit.it\/en\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/retelit.it\/en\/wp-json\/wp\/v2\/comments?post=7313"}],"version-history":[{"count":1,"href":"https:\/\/retelit.it\/en\/wp-json\/wp\/v2\/posts\/7313\/revisions"}],"predecessor-version":[{"id":7316,"href":"https:\/\/retelit.it\/en\/wp-json\/wp\/v2\/posts\/7313\/revisions\/7316"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/retelit.it\/en\/wp-json\/wp\/v2\/media\/7315"}],"wp:attachment":[{"href":"https:\/\/retelit.it\/en\/wp-json\/wp\/v2\/media?parent=7313"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/retelit.it\/en\/wp-json\/wp\/v2\/categories?post=7313"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/retelit.it\/en\/wp-json\/wp\/v2\/tags?post=7313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}