Metapattern is a revolutionary software analysis tool that makes possible models of unprecedented precision -- and breakthrough levels of software reuse. In this book, Pieter Wisse -- the creator of Metapattern -- offers the first comprehensive introduction to this new technique. Wisse begins with an informal case study illuminating the basics of metapattern, using it to model a simple event, and demonstrating its power. He offers a detailed introduction to the concepts underlying metapattern, including time-stamping and context orientation. Next, he compares metapattern with purely object-oriented approaches in solving a series of complex information modeling problems -- showing why it can often achieve richer, more useful results. Metapattern then walks step-by-step through modeling a full-scale financial accounting application, offering diverse IT organizations practical guidance for implementing the technique -- and for using it to enhance application integration, enterprise-wide. For all software architects, object-oriented developers, managers, and team leaders seeking to achieve greater reuse in their software systems.