Seven top Microsoft BizSpark startups building enterprise collaboration applications, spent last week in a coding marathon at Microsoft’s Silicon Valley campus. With round-the-clock assistance from SharePoint engineers, pizza, and healthy competition, these startups spent the week coding late into the night, enhancing their applications by utilizing the collaboration features of SharePoint 2010. Each company was invited to spend the week working in close collaboration with Microsoft SharePoint team members, as they tried to take their existing products and see how they could be used to leverage SharePoint.

Here’s a video with Lynda Ting, Microsoft’s Director of Business Development, Emerging Business Team, explaining the goals of the program: