The driving factors for SD-WAN adoption have not been static throughout its history. SD-WAN has evolved through three main stages to meet the business needs of its users.
The cloud has become an inseparable part of the IT enterprise as more applications make the transition to the cloud. Adaptations in WAN infrastructure that arise are necessary to meet the new and shifting IT landscape. Initially, SD-WAN was driven by the need for cost-saving since WAN infrastructure, MPLS, in particular, can be quite expensive. Today, it’s not just cost savings that are driving enterprises to SD-WAN. Enterprises have changed how they work, with features such as cloud, SaaS, mobile workers, and IT requirements to roll out new sites in days rather than weeks while reducing costs at the same time.
SD-WAN has become more than just a network for connecting locations. The rise of cloud, mobile, and business agility demands has required SD-WAN to become smarter by providing security, optimization, intelligence, and better reach. These changes in SD-WAN can be broken down into three phases, reflecting the ways that SD-WAN technologies have adapted over time to the demands of business requirements.