Kevlin Henney is a independent consultant, trainer, technologist, writer and renowned keynote speaker known for his work helping organisations, teams and individuals with their software development practices, processes and architectures. He is co-author of two volumes in the Pattern-Oriented Software Architecture series, editor of 97 Things Every Programmer Should Know, co-editor of 97 Things Every Java Programmer Should Know, and contributor to many other publications online and in print.