HMC 4.5 brings together powerful Microsoft enterprise products such as
Microsoft Exchange Server, Microsoft Windows SharePoint Services, and
now gives you Microsoft Office Communications Server 2007, which
manages all real-time communications such as instant messaging (IM)
and audio and video conferencing.
Other new features and enhancements:
• Exchange Server 2007 SP1: Web-based OABs and resource mailboxes
• Windows SharePoint Services: multi-tenant People Picker functionality
• Provisioning capabilities have been expanded: Microsoft Provisioning System (MPS) cross data store integration procedures and Individual Information Worker (IIW) tenant model