Microsoft Project Server 2010 enables medium-sized and large organizations to better manage projects and project portfolios, collaborate across the entire enterprise, and effectively analyze and report on both projects and programs. Project Server 2010 is accessed via its clients, Project Professional and Project Web Access.
A Microsoft Project Server client access license (CAL) gives a user the right to access the services of Project Server or Project Portfolio Server. Any application that accesses the services of Project Server or Project Portfolio Server requires a CAL, including Project Professional, Project Web Access, SharePoint sites with Web Parts that display project information, Microsoft Office Outlook integration with the COM add-in, and third-party applications.