Microsoft is claiming they have the largest Windows Sharepoint Services 3.0 deployment in the world. I don’t doubt them. Having talked to various MS people about the subject of Sharepoint, I know how much they use it. They’ve been using it for 6 years now and have all but eliminated the use of the file share for document sharing (there’s probably some left, in some dark corner!).
They’ve published a document that describes the lessons learned by Microsoft IT from their day-to-day operations of managing Sharepoint Servces 3.0 and Office Sharepoint Server 2007.