This document discusses building Windows Phone 7 apps for enterprise use. It introduces the need for mobile apps in enterprises where employees need access to data and notifications while in the field. It then describes building a sample app called P.L.I.M.S for an environmental testing company called EnviroCorp that allows scientists and lab managers mobile access to test results and notifications. The document covers designing the mobile app, building backend services on Azure, consuming those services from the phone, deploying to enterprise users, and considering alternative platforms like HTML5.