The chapter presents the utilization of digital manufacture with a value‐driven Manufacture context, including the development of digital manufacturing capability for integration into the Integrated Product Process Development process. As part of the business process the key phase being addressed is the concurrent integration of manufacturing requirements at the stage when design geometry has been released. The digital manufacturing platform is used to provide simulations of the assembly process that have been developed in order provide simultaneous estimation of the associated learning curves, cycle time, recurring cost, and throughput. The integration of Lean principles at the program and functional levels will also be addressed as the Lean approach underwrites the entire program. Fundamentally, the compression of lead time, increase in value‐added effort, and reduction in waste and inefficiency are the key Lean challenges being addressed. Consequently, a Lean Implementation Methodology will be presented while the Lean characteristics of the functional development will also be highlighted. The latter also includes the Lean Flow Accounting Methodology that addresses the Lean flow of work through a plant in order to maximize value‐added effort according to a top‐down assessment of financial value and optimal throughput, thereby reducing Work In Progress.