Digital transformation has been underway for several years, with the rapid adoption of BYOD and IoT. Retailers, insurance companies, and large enterprises with a distributed workforce need to extend the same applications and functions to remote users as they enjoy at their corporate offices. The challenge is that these things can be difficult if not impossible to implement given that there are often no IT personnel at these remote locations, and that most of this functionality can no longer be implemented or controlled using traditional remote network devices such as integrated services routers.”]
Source: https://www.fortinet.com/blog/industry-trends/defining-sd-branch