Although the strategies and tactics of the application development organization have changed dramatically over the past decade, the primary purpose remains the same: driving application-related projects and programs. Forrester's research in this space helps application development professionals find their way in three primary areas: 1) what applications to build; 2) how to build them; and 3) what tools and technologies to use along the way. This report assembles an introduction to key questions in each area, typical client inquiries, and relevant published research.