SD-WAN is Dead, Long Live SD-WAN! by Dane Jackson скачать в хорошем качестве

SD-WAN is Dead, Long Live SD-WAN! by Dane Jackson

Since the emergence of SD-WAN in 2014, the WAN ecosystem has undergone a major transformation. Traditionally, businesses relied on carrier-managed private WAN solutions, but today, most have transitioned or are in the process of transitioning to SD-WAN leveraging Internet-based connectivity. Improvements such as service availability, bandwidth capacity, and link quality combined with lower costs and the need for more flexible connectivity options as applications migrate from on-premises to the cloud made this a relatively obvious business choice. However, for many businesses, the transition has not been as seamless as expected. In regions like the United States, Canada, and Europe, Internet-based WAN connectivity performs comparably to legacy private circuits, making it a viable replacement. Yet, in other parts of the world, inefficient routing presents significant challenges. For example, traffic between South American nations often routes through Florida or Houston, and traffic between African and Middle Eastern nations frequently routes through Frankfurt or London. Even in 2025, some networks—particularly “”eyeball networks””—remain poorly peered in certain regions, making Internet-based WAN transport suboptimal and often unfit for purpose. Conversely, other networks—””content networks””—are exceptionally well-peered in these regions. The key to overcoming the challenge of Internet-based WAN transport lies in leveraging these well-peered content networks to provide transit, creating regional network bridges, and optimize WAN routing. SD-WAN, with its intelligent traffic steering and dynamic path selection, is the solution to unlocking the full potential of Internet-based WAN transport.” Checkout chinog.org for details.