Microsoft has published information about Windows Essential Business Server on the company website:

Overview (screenshots below)

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Windows Essential Business Server Overview – click on the image for larger view

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This is an actual screenshot of the Beta 2 release of Windows Essential Business Server (System Health page). This page was one of my larger responsibilities over the last 8-10 months. I also selected the color palette for the application. Click on the image for larger view.

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This is Remote Web Workplace – a website that will allow users to access their office PC and office documents via the Internet. I spent a year designing this feature. Click on the image for larger view.