Dr. Garrett Thurston is a Principal Technical Fellow at Dassault Systèmes, where he builds the enterprise engineering decision infrastructure that lets complex, transdisciplinary systems be designed, governed, and evolved. Across more than four decades in aerospace and defense, his work spans systems architecture, regulated systems and software lifecycle management, and product line engineering. Since 2013 he has led Dassault Systèmes' Model-Based Acquisition strategy, working with Department of Defense communities to mature digital engineering, mission architecture, and capability portfolio management across major programs. He has guest lectured for the Defense Acquisition University on the Modular Open Systems Approach and analytic roadmapping, and his published work at Dassault Systèmes includes white papers on the Model-Based Enterprise, MOSA, and Transforming the Acquisition Value Network. Earlier, Dr. Thurston built and led the Aerospace, Defense, and Security division of Foliage, directing programs that included three Boeing 787 systems, Rolls-Royce engine product line initiatives, and flight and ground software for the X-47B. He is a named co-inventor on four U.S. patents in advanced materials processing applicable to hypersonic leading edges and other extreme-environment structures. He authored several frameworks now used across industry and government, including SE 6.0, AI-Augmented Roadmapping, the Innovation Flywheel, and the Knowledge-Work-Decision model, and presents frequently at NDIA, GPDIS, VFS, and the Software Engineering Institute.