What you need to know about Exchange 2016 and Office 365
Exchange 2016 reached the end of mainstream support on October 13, 2020, and has an extended end date of October 14, 2025. What this means is that Microsoft no longer provides any feature enhancement or design changes when the mainstream support ends. However, you are still eligible to receive bug fixes and security updates till the extended support date. Learn more about the fixed lifecycle policy for Microsoft’s products.
If you are planning to migrate from Exchange 2016 to Exchange online due to organizational requirements or move away from on-premises environments, there are certain things you must keep in mind.