Microsoft has announced a critical update regarding the support lifecycle of its Exchange Server and Skype for Business products. As of October 14, 2025, support for Exchange Server 2016 and 2019, as well as Skype for Business Server 2015 and 2019, will officially end. To assist organizations in transitioning to newer platforms, Microsoft is offering a one-time, six-month Extended Security Update (ESU) program, extending support until April 14, 2026. Understanding the Extended Security...