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An architecture line structure for command and control software

Product line software engineering should include an up-front and ongoing investment in a reusable architecture. Identification, selection, documentation and validation of general architectural patterns and their product line, organisation or domain specific variants allow designers to adopt approved patterns as a starting point. This paper discusses how to apply design patterns to the problems of product lines, including various and evolutionary design techniques of embedded software. The patterns are a precondition for the development of frameworks for designing and reusing architectures of the sub-domains that promise the highest benefits. The classification of core architectural assets helps to achieve a balance between discipline product line architecture and creativity forced by future needs that are not fully predictable.