A Client Access License enables you to connect devices or user accounts to Microsoft Servers. CAL Suites combine the most popular CALs into two convenient packages:
Core CAL Suite: Provides essential capabilities that every user needs.
Enterprise CAL Suite: Delivers Microsoft's vision for the future of productivity and tools that simplify managing devices.

Server CAL

Core CAL
Suite

Enterprise
CAL Suite

Windows Server

Windows Server Standard

Active Directory Rights Management Services

Microsoft Exchange Server

Exchange Server Standard

Exchange Server Enterprise

Microsoft SharePoint

SharePoint Server Standard

SharePoint Server Enterprise

Microsoft Lync Server

Lync Server Standard

Lync Server Enterprise

Microsoft System Center

System Center Configuration Manager

System Center Client Management Suite

Microsoft Forefront

Forefront Protection Suite

Forefront Endpoint Protection

Forefront Unified Access Gateway

*Suite components currently planned for August 2011, and would be available with active Software Assurance coverage on or after the products become available for purchase in Volume Licensing. Because Microsoft must be able to respond to changing market conditions, these plans are subject to change at any time.

Business Productivity Infrastructure Optimization
Core Infrastructure Optimization
Microsoft Volume Licensing