Leon Starr is a co-founder of Model Integration, LLC in San Francisco, California where he helps large projects develop model driven software successfully. Since 1984 he has been a prolific modeler of real-time, distributed and embedded systems. His models have been used in fighter jets, factory material transport control systems, ultrasound diagnostic and cardiac pacing systems, gas chromatography and semiconductor wafer inspection systems, video post-production systems and networked military battle simulators. He has authored training and taught numerous modeling courses to systems engineers and software developers worldwide. Leon is the author of the books How to Build Shlaer-Mellor Object Models, How to Build Class Models, Executable UML: A Case Study, How to Build Executable UML Models and assorted papers at uml.org and modeling-languages.com. Leon speaks barely passable French and equally poor Swedish.Stephen Mellor is a well-known technology consultant on methods for the construction of real-time and embedded systems, a signatory to the Agile Manifesto, and adjunct professor at the Australian National University in Canberra, ACT, Australia. Stephen is the author of Structured Development for Real-Time Systems,Object Lifecycles, Executable UML, and MDA Distilled. He is presently the Chief Technical Officer for the Industrial Internet Consortium, where he directs the standards requirements and technology & security priorities for the industrial internet. In that role, he coordinates the activities of the several engineering, architecture, security and testbed working groups and teams. Before that, he was Chief Scientist of the Embedded Software Division at Mentor Graphics, and founder and past president of Project Technology, Inc., before its acquisition. He participated in multiple UML/modeling-related activities at the Object Management Group (OMG), and was a member of the OMGArchitecture Board, which is the final technical gateway for all OMG standards. Stephen was the Chairman of the Advisory Board to IEEE Software for ten years and a two-time Guest Editor of the magazine, most recently for an issue on Model-Driven Development.For more than 30 years, Andrew Mangogna has been a hands-on builder of embedded software systems. He has worked in application areas ranging from laboratory instrumentation, remote data collection, and video special effects to implantable medical devices. Andrew has always had a special interest in applying more formal techniques to the challenge of engineering software to create systems in a cost effective manner with demonstrable quality. Trained in the basics of object oriented analysis by Stephen Mellor himself, he has successfully applied executable modeling techniques and model translation to many projects and has written several tools to help automate the translation process. With a keen interest in technology and a practical realization of the benefits of modeling, he has a mastery of mapping models to appropriate implementation technology to obtain high quality software systems.