Windows Server 2022 is built on the strong foundation of Windows Server 2019 and brings many innovations on three key themes: security, Azure hybrid integration and management, and application platform.
 
Security

The new security capabilities in Windows Server 2022 combine other security capabilities in Windows Server across multiple areas to provide defense-in-depth protection against advanced threats. Advanced multi-layer security in Windows Server 2022 provides the comprehensive protection that servers need today.
Azure hybrid capabilities
You can increase your efficiency and agility with built-in hybrid capabilities in Windows Server 2022 that allow you to extend your data centers to Azure more easily than ever before.
There are several platform improvements for Windows Containers, including application compatibility and the Windows Container experience with Kubernetes. A major improvement includes reducing the Windows Container image size by up to 40%, which leads to a 30% faster startup time and better performance.
 
Key Features
Migrate local users and groups to the new server.
Migrate storage from failover clusters, migrate to failover clusters, and migrate between standalone servers and failover clusters.
Migrate storage from a Linux server that uses Samba.
More easily synchronize migrated shares into Azure by using Azure File Sync.
Migrate to new networks such as Azure.
Migrate NetApp CIFS servers from NetApp FAS arrays to Windows servers and clusters.