: Added a mechanism to remove the final on-premises Exchange server when all mailboxes have been migrated to the cloud.
: Official support was added for running Exchange 2019 on Windows Server 2022 and within environments utilizing Windows Server 2022 Active Directory servers. Security Hardening : exchange 2019 cu12
: Added support for Multi-Factor Authentication (MFA) enabled admin credentials in Hybrid Management PowerShell cmdlets. : Added a mechanism to remove the final
: Introduced a product key for Exchange 2019 hybrid servers at no additional cost for users moving to Exchange Online. : Introduced a product key for Exchange 2019
CU12 streamlined the configuration for HMA, making it easier for administrators to secure the bridge between their local infrastructure and the cloud. Furthermore, CU12 was a prerequisite for the subsequent release, Exchange Server SE (Subscription Edition). By ensuring the infrastructure was aligned with CU12, organizations positioned themselves for a smoother transition to the future version of Exchange, highlighting that CU12 was not just an endpoint, but a bridge to the next generation of on-premises Exchange.
