This document specifies the foundational vocabulary, concepts and principles associated with an architecture and used within the architecting practice for various entities, including software, systems, enterprises, missions, systems of systems, families of systems, infrastructures, products (goods or services), product lines, service lines, technologies and business domains. The vocabulary, concepts and principles apply to: — organizations that develop architectures; — organizations seeking sustained success through the implementation of architecture practices; — organizations and interested parties seeking to improve communication through a common understanding of the vocabulary, concepts and principles used in architecture description; — organizations performing conformity assessments against the requirements of architecture-related standards and specifications; — providers of architecture descriptions, guidelines, training, education, evaluation or recommendations in architecture practices; — developers of architecture-related standards, architecture description languages, architecture modelling languages, reference architectures, reference models related to architecture, architecture frameworks and architecture-related tools/technologies. The application areas of this document include, but are not limited to, the following: artificial intelligence (AI), machine learning (ML), Internet of Things (IoT), cloud computing, big data, smart cities, smart manufacturing, cybersecurity, digital twin, telecommunications, aerospace, defense, banking, finance, insurance, energy, automotive, hospitality, healthcare, supply chain, transportation, manufacturing, agriculture, production, and infrastructure. This document addresses generic architecture-related terms and definitions and does not address domain-specific terms and definitions. This document does not address concepts and principles related to architecture competencies. The proposed deliverable is another document in the existing group of architecture related standards (e.g. ISO/IEC/IEEE 42010, ISO/IEC/IEEE 42020, ISO/IEC/IEEE 42030).