Exchange Server Subscription Edition (SE) is the latest incarnation of an almost 30-year-old server product, and as of this conference, it is the only supported version of Exchange Server, and that isn't going to change. Exchange Server SE starts its life very similar to Exchange Server 2019, but there are differences. There are even more differences when compared to Exchange Server 2016. This session will (try) to tell you everything you need to know about Exchange Server SE to successfully deploy it in your organization. Since no new features were introduced in the RTM release of Exchange Server SE, I'll also cover what to expect in CU1 and CU2 when they ship in 2026.