System design is the process of defining the architecture, components, modules, interfaces, and data for a system to satisfy specified requirements. One could see it as the application of systems theory to product development. There is some overlap with the disciplines of systems analysis, systems architecture and systems engineering. If the broader topic of product development “blends the perspective of marketing, design, and manufacturing into a single approach to product development,” then design is the act of taking the marketing information and creating the design of the product to be manufactured. Systems design is therefore the process of defining and developing systems to satisfy specified requirements of the user.-As collaborated on Wikipedia
 This article on wiki incorporates public domain material from the General Services Administration document "Federal Standard 1037C".
 This article on wiki incorporates public domain material from the United States Department of Defense document "Dictionary of Military and Associated Terms".
 Ulrich & Eppinger (2000). Product Design & Development. Irwin McGraw-Hill. ISBN 0-07-229647-X.