Microsoft Office SharePoint Server 2007 is built upon the ASP.NET 2.0 framework. In many aspects it enriches this platform and extends the available functionality. Unfortunately the dynamic interface and the extensibility have major impact on the standards compliance and the rendered output. The figure above presents various areas of custom development within ASP.NET 2.0 and SharePoint 2007. The green areas are the one which are fully controlled by the developers. The orange areas are the challenges that the developers will face while trying to deliver an accessible SharePoint 2007 solution. Though the impact on the accessibility depends on the particular area, all of them are required to make a web site fully accessible. The last piece – the Editors Area is left unaltered because it has no influence on the accessibility of the public side of a web site - the area you will focus on most of the times. Once again developing an accessible web site in SharePoint 2007 is doable yet very challenging. It requires understanding of the accessibility guidelines, SharePoint 2007 and ASP.NET 2.0 internals and accessibility issues within the both platforms.