We’ve talked about Microsoft Lync Server before. The follow-up to Office Communication Server does a number of cool things like handle chat and voice communication in an Enterprise environment. Lync is also included in Microsoft Office 365 which is a cloud-based solution for small-to-medium businesses that also provides access to Exchange and SharePoint.
An official Lync client for Windows Phone 7 is supposed to be on the way, but that’s not stopping some enterprising developers from building their own app. The video is awfully boring, but it gives you an idea of some of the things that you’ll be able to do with a Lync client for Windows Phone 7.