# Annex A, ISO 42024 ## Published contents Contents1 Scope2 Normative references3 Terms and definitions4 Architecture concepts4.1 Overview4.2 Architecture and architecting4.3 Architecture design and solution design4.4 Architecture definition and communication4.5 Stakeholder concerns and architectural aspects4.6 Architecture viewpoints and architecture views4.7 Architecture frameworks and architecture description languages4.8 Architecture descriptions and architecture models4.9 Reference architectures and reference models4.10 Life cycle and life history4.11 Architecting precepts5 Architecting principles5.1 Introduction to the principles5.2 Principles about the purpose of an architecture5.3 Principles about the focus of an architecture5.4 Principles about architecting outcomesTerms 3.2 Architecting concepts 3.2.1 Architecture3.2.2 Architecture feature3.2.3 Architecting3.2.4 Architecting principle3.2.5 Architecture principle3.2.6 Architecture framework3.2.7 Reference architecture3.3 Entity related concepts 3.3.1 Entity of interest3.3.2 Solution entity3.3.3 Environment3.3.4 Context3.3.5 Enterprise3.3.6 System3.3.7 Aspect3.3.8 Dimension3.4 Architecture design concepts 3.4.1 Design (noun)3.4.2 Architecture design3.4.3 Architecture information package3.4.4 Engineering effort3.4.5 Solution design3.4.6 Solution information package3.4.7 Stakeholder3.4.8 Stakeholder perspective3.4.9 Concern3.5 Architecture description concepts 3.5.1 Architecture description3.5.2 Solution description3.5.3 Architecture view3.5.4 Architecture viewpoint3.5.5 Model3.5.6 Metamodel3.5.7 Reference model3.6 Entity life cycle concepts 3.6.1 Life cycle3.6.2 Life cycle phase3.6.3 Life cycle stage3.6.4 Life historyAnnexes A.1 Architecture design and solution related entitiesA.2 Architecture expressed as a set of modelsA.3 Life cycle and life history conceptsA.4 Enterprise and system conceptsA.5 Duality of architectural decomposition and architectural synthesisB.1 BackgroundB.2 Aligning architecture in designB.3 Duality of architectureB.4 Pursuit of opportunities Home / Annexes Annex A # Annex A, Notes on terms and concepts Annex A has 5 sections in the published contents of ISO/IEC/IEEE DIS 42024. The public preview gives the titles but not the body text, so each page states what the section covers, the definitions it builds on, the evidence to keep and the gaps it exposes, and says plainly where the text is not public. An annex is read after the clauses, and these two are notes and guidance rather than a clause requirement. The pages here label the status as not stated in the public preview, because the preview does not state it. A.1 ### Architecture design and solution related entities The subclause is the first note in Annex A, and its title places it on the entities related to architecture design and solution design. It follows the clause 3 definitions of desig... A.2 ### Architecture expressed as a set of models The subclause is the second note in Annex A, on an architecture expressed as a set of models. It builds on model (3.5.5), metamodel (3.5.6) and architecture description (3.5.1).... A.3 ### Life cycle and life history concepts The subclause is the third note in Annex A, on life cycle and life history concepts. It builds on life cycle (3.6.1), phase (3.6.2), stage (3.6.3) and life history (3.6.4).... A.4 ### Enterprise and system concepts The subclause is the fourth note in Annex A, on enterprise and system concepts. It builds on enterprise (3.3.5) and system (3.3.6), and on the entity of interest (3.3.1) that both ... A.5 ### Duality of architectural decomposition and architectural synthesis The subclause is the fifth note in Annex A, on the duality of architectural decomposition and architectural synthesis. It closes the annex with the two directions of architecture w... ## How to use the annexes Annex A connects the terms; Annex B applies the judgement of architectural significance. Use Annex A when the practice argues about what a word means, and Annex B when it argues about whether a decision belongs at architecture level. Both are better read with the clause 3 definitions open. Last updated: 2026-10-21 Source: https://iso-42024-revision-checker.theartofservice.com/annex-a/