Kevlin Henney is an independent consultant and trainer. His work focuses on patterns and architecture, programming techniques and languages, and development process and practice. He has been a columnist for various magazines and online publications, including The Register, Better Software, Java Report, CUJ, and C++ Report. Kevlin is co-author of two volumes in the Pattern-Oriented Software Architecture series: A Pattern Language for Distributed Computing and On Patterns and Pattern Languages. He also contributed to 97 Things Every Software Architect Should Know