Common Windows Server roles include:

• Active Directory Domain Services (AD DS): Provides directory services and domain authentication
• DNS Server: Resolves domain names to IP addresses
• DHCP Server: Automatically assigns IP addresses to network clients
• File and Storage Services: Manages file shares and storage
• IIS (Web Server): Hosts websites and web applications
• Print and Document Services: Manages network printers
• Remote Desktop Services: Provides remote access to applications and desktops
• Hyper-V: Provides virtualization platform
• Windows Deployment Services (WDS): Deploys Windows operating systems over the network

Each role can be installed and configured based on organizational needs.