Development, a set of activities that carried out early in the systems engineering life cycle. In order to collect and prioritise operational needs and challenges, develop alternative concepts to meet the needs, and select a preferred one as the basis for the following system or capability and implementation.

Development takes place early in the systems engineering life cycle. The success of the subsequent system or capability can critically depend on the soundness of the foundation that laid during the concept stage.

Many processes, methods, and tools are available for conducting concept development. The initial questions that must answer early to get the requirements elicitation done right. These questions apply whether you are developing a product or an operational structure to employ the product.