OData

Create and consume RESTful APIs in a simple and standard way

Office Business Applications & Data Services

Beth Massi has been busy creating a number of great posts describing how to build add-ins to Excel, Outlook, Word, etc to work with data from an ADO.NET Data Service.  The articles can be found here: ADO.NET Data Services - Building an Excel Client OBA Part 1 - Exposing Line-of-Business Data OBA Part 2 - Building an Outlook Client against...