Engineering Design: Design for X Time dimension: Product Life Cycle, Product Life Cycle Engineering, Product Life Cycle Management (that is not the same like the Product Cycle in business studies and economics, see e.g. Vernon (1966)). Primarily, the unit of analysis here is a product, or more clearly, one item Meso-level organisation: concurrent engineering (American), simultaneous engineering (British), and overlapping-parallel Product Development Processes Micro-level organisation: cross-functional teams, inter-disciplinary teams, etc.