Windows Server has two primary release channels: the Long-Term Servicing Channel (LTSC) and the Annual Channel (AC). The LTSC provides a longer-term option focusing on a traditional lifecycle of security and quality updates. The AC provides more frequent releases, focusing on containers and microservices, so you can take advantage of innovation more quickly.
Windows Server 2025 is the current LTSC release. Windows Server, version 23H2 is the latest AC release. The focus on virtualization, container, and microservice innovation continues with Azure Stack HCI, Windows containers, and AKS on Azure Stack HCI.
The table below shows the history of all monthly security and non-security preview updates released for supported versions of Windows Server in the Long-Term Servicing Channel.
As a Windows Server hybrid administrator, you integrate Windows Server environments with Azure services and manage Windows Server in on-premises networks.