Office Live is an amazingly flexible web design and business application tool, but understanding how to build customisation services around Office Live can be a bit of a hard one, especially when it includes things like Live ID from a client application. The presentation video from Mix07 goes through the process by initially doing a couple of site design. Then they build a reservation mini application that shares information between custom sharepoint lists internal to the site and present input/output information on the public site. Then workflow is added to make the reservations move from requests to processes when the status is changed and update a calendar. Remember that Office Live is built on a Windows SharePoint Services V3, so a platform that is already hotting up. A simple mashup is built using the customer information and a Local.Live.com map. Finally a client based application is created to log into the web service and then access the lists to update information. While this is nothing revolutionary,...