This document discusses the differences between the traditional IT model and the emerging app economy model. It outlines 10 steps that can help enterprises transition from traditional IT approaches to embrace app-centric approaches like APIs, mobile apps, and external developers. These steps include viewing existing software through an "app lens", cultivating internal and external entrepreneurs, prioritizing rapid iteration over large waterfall projects, and connecting people through APIs and developer platforms. The document advocates that enterprises evolve their software distribution and monetization to be more like online app stores and embrace new forms of authorization at API boundaries.