Robert C. Martin is President of Object Mentor Inc., a leading consultancy in object-oriented design, patterns, UML, agile methodologies, and extreme programming. He authored the JOLT Award-winning publication Agile Software Development: Principles, Patterns, and Practices (Prentice Hall) and the best-selling Designing Object-Oriented C++ Applications Using the Booch Method (Prentice Hall). He edited Pattern Languages of Program Design 3 (Addison-Wesley), edited More C++ Gems, and co-authored XP in Practice with James Newkirk (Addison-Wesley). A well-known speaker at international developer's events, Martin edited the C++ Report for four years.