Standard architectures have also evolved, resulting in the emergence of SOA architectures in the
field of information systems. Since 2000, the UML and BPMN standards have matured and stabilized,
together with their adaptations to specific applications (such as SysML for large-scale systems).
The field of enterprise architecture, which has gradually emerged since the 1990s, can use these
standards to model the entire enterprise. TOGAF thus recommends the use of UML and BPMN. How-
ever, TOGAF has its own metamodel. An architect who has to use models must first decide how to use
UML for TOGAF and how to map UML concepts to TOGAF concepts. The goal of Chapter 6 is to
provide an answer to this question.