The best part about being a technology analyst is being able to constantly witness the evolution of a market and/or technology. One example of this has been the enterprise wide area network (WAN) that largely stood stagnant for the better part of three decades. Routers may have gotten faster but the hub-and-spoke architecture that uses MPLS as its backbone was the same design used when I was a network professional in the early ’90s. However, that doesn’t indicate that there wasn’t a need for a WAN evolution. Network engineers have been frustrated with the inefficiency and high cost of legacy WANs for decades but couldn’t find another option.
But then along came software-defined WANs, or SD-WANs, as they are more commonly known. A handful of years ago, a few startups, such as CloudGenix, recognized the problem with WANs and saw that the shift to the cloud was going to exacerbate the issues. Businesses were rapidly embracing digital transformation, and that requires agile IT infrastructure. The cloud brings an unprecedented level of agility to infrastructure and applications but requires an equally agile network to ensure services and applications are delivered with a best-in-class user experience.
It’s this shift to a cloud-first business that has driven the rapid uptake of SD-WAN. The COVID-19 pandemic has further accelerated the notion of the cloud, which has caused an increase in usage with SD-WAN. Recently, ZK Research conducted a “Work From Anywhere Study” that revealed some interesting data points that support this thesis. Specifically:
The last bullet is a particularly interesting statistic as the network has never been something that organizational leaders have paid much attention to. Though today, for most companies, the network has become the business. No network means no access to most applications, which, in turn, means lost productivity, lower revenue, and unhappy customers, all of which are obviously horrific.
SD-WAN is certainly transformative, but most of today’s solutions have been around for about a decade and haven’t changed much in that time. As is typical with new technology, the first wave is designed to provide incremental improvements by doing what was done before but a bit more efficiently. The second wave is where there’s innovation that enables the new technology to do things the old could not.
Consider the cloud: the first phase of cloud was simply doing a lift and shift of existing apps into the cloud. This improved resiliency and made apps more scalable, but it wasn’t until app developers embraced cloud native design that how apps are built and consumed fundamentally changed. Similarly, for SD-WAN, the first wave is coming to an end, and the industry needs to focus on solving some of the challenges that traditional solutions cannot address. Legacy SD-WANs reduce the cost of networking and improve reliability but still have the following challenges:
What’s needed now is a next-generation SD-WAN that not only lets companies operate the network more efficiently but also opens up the door to doing things that weren’t possible with legacy WANs. Below are the attributes of a next-generation SD-WAN:
The network-centric nature of digital businesses has shifted the network from being the “pipes” of a company to its most important strategic asset. As a result, the network needs to evolve, but SD-WAN alone doesn't solve all problems. Palo Alto Networks next-generation SD-WAN, enabled by the acquisition of CloudGenix, shifts the focus of SD-WAN from being transport centric to being security and application centric. This provides the company’s customers with a solid foundation to meet today’s needs but also those into the foreseeable future.
To learn more about choosing the right SD-WAN solution for your organization, watch this on-demand webinar with ZK Research.
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