STEP CentreSince the 1980’s when graphics displays and CAD (Computer Aided Design) became available there has been an international program to develop a comprehensive STandard for the Exchange of Product models (STEP - ISO 10303). These structured knowledge-based engineering standards capture all information about products and engineering projects in a format that is both human and computer understandable.This suite of standards, which like the Internet has been largely funded by the military, support Concurrent Engineering (simultaneous use and development of design data and databases by collaborating engineers anywhere in the world), advanced design methods such a Simulation Based Design, Virtual Prototyping and Rapid Prototyping, and the complete Life Cycle Analysis of products (including their deployments, recovery and recycling). Life-Cycle based design is especially important for complete recycling and Total Sustainability.