architecture
Summary
The set of structures needed to reason about a product. These structures are comprised of elements, relations among them, and properties of both.
In a service context, the architecture is often applied to the service system.
Note that functionality is only one aspect of the product. Quality attributes, such as responsiveness, reliability, and security, are also important to reason about. Structures provide the means for highlighting different portions of the architecture. (See also “functional architecture.”)