"This is the official Pocket Guide for the ArchiMate® 4 Specification - your essential quick reference for the ArchiMate modeling language. It provides a condensed reference to the modeling language in a portable format. What’s more, it’s authoritative, with material derived from The Open Group ArchiMate documentation.The ArchiMate 4 Specification, a standard of The Open Group, defines an open and independent modeling language for Enterprise Architecture that is supported by different tool vendors and consulting firms. It provides a notation to enable Enterprise Architects to describe, analyze, and visualize the relationships among business domains in an unambiguous way. Version 4 represents a substantial evolution of the standard, including housekeeping to clean up and streamline the standard to improve its ease of adoption and use.The audience for this document is: Enterprise Architects, Business Architects, IT architects, Data Architects, system architects, solutions architects, and senior managers seeking a first introduction to the ArchiMate modeling language.A prior knowledge of Enterprise Architecture is advantageous but not required.Topics covered include:•A high-level introduction to the ArchiMate Specification, its relationship to Enterprise Architecture, and an overview of the changes in Version 4 of the specification•The structure of the ArchiMate modeling language, including the top-level structure, aspects, domains, the ArchiMate core language, and the ArchiMate full language•The structure of the common, generic ArchiMate elements•The relationships in the language•The concepts for expressing the motivation for an architecture•Elements for modeling the enterprise at a strategic level•The definition and usage of the Business Domain elements•The definition and usage of the Application Domain elements•The definition and usage of the Technology Domain elements•The relationships between different domains of the language•The language elements for expressing the implementation and migration aspects of an architecture•The ArchiMate viewpoint mechanism, and the example viewpoints provided with the standard•A language notation summary"