DODI 5000.97 : Department of Defense Instruction 5000.97 Digital Engineering

An acquisition and design strategy consisting of a technical architecture that uses system interfaces compliant with widely supported and consensus-based standards (if available and suitable). The strategy supports a modular, loosely coupled and highly cohesive system structure that allows severable system components at the appropriate level to be incrementally added, removed, or replaced throughout the life cycle of a system platform to afford opportunities for enhanced competition and innovation.