Grady Booch is recognized internationally for his innovative work in software architecture, software engineering, and collaborative development environments. He has devoted his life's work to improving the art and the science of software development. Grady served as IBM's Chief Scientist of Rational Software Corporation since its founding in 1981 and through its acquisition by IBM in 2003. He now is part of the IBM Thomas J. Watson Research Center serving as Chief Scientist for Software Engineering, where he continues his work on the Handbook of Software Architecture and also leads several projects in software engineering that are beyond the constraints of immediate product horizons. Grady continues to engage with customers working on real problems and is working to build deep relationships with academia and other research organizations around the world. Grady is one of the original authors of the Unified Modeling Language (UML) and was also one of the original developers of several of Rational's products. Grady has served as architect and architectural mentor for numerous complex software-intensive systems around the world in just about every domain imaginable.