The main objective of this Phase I project is to demonstrate the feasibility of implementing a unified geometry service to support multiple engineering disciplines within missile defense core truth Modeling and Simulation (M&S). The project will leverage innovation from the tactical missile sector into the strategic missile sector and apply it to three core practices: 1. CAD-precise modeling of product geometry and selection of the constituent physical materials; 2. Encapsulation, configuration, and execution of engineering discipline models, along with the marshaling of associated data products; 3. ion of engineering models behind an integrated user interface. The unified geometry service will become a key enabler for modeling future interceptors and threat missiles. In the adjacent sector of tactical missiles, this innovation has been proven to scale across disciplines and even materiel product lines, increase both the quality and speed of engineering data, achieve faster design analysis cycles, increase actionable engineering insight, and produce substantial life-cycle cost avoidance. The Phase I product will be scalable toward additional core truth engineering disciplines in Phase II, and toward Digital Engineering and artificial intelligence (AI) / machine learning (ML) in Phase III. Our innovative solution offers to improve consistency and data quality across multiple engineering disciplines within missile defense core truth M&S, to expedite collaboration and speed of data across those disciplines, and to advance core truth for harmony with agency-wide digital engineering. Approved for Public Release | 21-MDA-11013 (19 Nov 21)