This document discusses building mobile apps with PhoneGap and ASP.NET Web API. It describes the architecture of using HTML, CSS, jQuery Mobile, and Web API with a data access layer and data store. It covers topics like implementing RESTful endpoints, enabling CORS and token-based authentication on the Web API, and accessing device features through PhoneGap plugins. It also mentions some common issues like CORS, emulator networking, and provides additional resources for learning PhoneGap.