The designA usable representation of a solution. For more information see Key Terms (p. 14) and Requirements and Designs (p. 19)., structure, and behaviour of the current and future states of a structure in terms of its components, and the interaction between those components. See also business architectureThe design, structure, and behaviour of the current and future states of an enterprise to provide a common understanding of the organization. It is used to align the enterprise’s strategic objectives and tactical demands., enterprise architectureA description of the business processes, information technology, people, operations, information, and projects of an enterprise and the relationships between them., and requirements architectureThe requirements of an initiative and the interrelationships between these requirements..