John Michelsen is the chief technology officer and cofounder of ITKO/Ca Technologies. Before forming ITKO, he was director of development at Trilogy Inc. He is the chief architect of the LISA service virtualization and automated validation platform and a leading industry advocate and consultant for lifecycle optimization of enterprise applications. His clients include Xerox, Cendant Financial, Microsoft, American Airlines, Union Pacific, Raima, Sabre, and Nielsen Market Research. Michelsen holds numerous patents in such areas as service-oriented architectures, object-oriented database management systems, middleware, model-driven architectures, and cloud. He presents regularly at IT and software development events, including SOA World, Infoworld SOA Summit, STAReast, Better Software, IBM Impact, SD West, TUCON, SoftwareAG Integration World, Cloud Computing Summit, TD Summit, and Software Test & Performance. Michelsen contributes frequently to IT publications, such as Virtualization Journal, SD Times, Software Test & Performance, SIGNAL DoD Monthly, Dr. Dobb s, and Software Development.