The document discusses the reasons for migrating from IBM Lotus to Microsoft, highlighting cost reductions in licensing and maintenance, user requests for Microsoft tools, and the available applications. It compares the total cost of ownership for both platforms, noting that while Lotus offers lower licensing costs, Microsoft has a more extensive array of applications and user demand. Additionally, it emphasizes the importance of maintaining an open standard and the benefits of web 2.0 functionality provided by IBM Lotus over Microsoft SharePoint.