Secure Access Service Edge (SASE) has become one of the hottest topics in the industry where SD-WAN meets security delivered in a cloud-centric offering. While Gartner introduced the SASE term in 2019, the general principles behind SASE have been brewing for some time as enterprises have been observing a fundamental shift in how their users access business and workflow systems. The well-defined, static, and finite network edge of the past is being replaced by business users who are working outside of their corporate walls and accessing business information systems that are beyond their corporate data center. This could not be more evident than with the massive growth in the cloud market, with IDC projecting that worldwide spending on public cloud services and infrastructure will double from $229 billion in 2019 to almost $500 billion by 2023. Adding to this trend, businesses worldwide are seeing an inversion of the norm at the network edge, with greater fluidity and mobility driving us toward an infinite network edge as the new norm in terms of both challenges and opportunities.
