This standard describes the requirements to be satisfied by domain-specific reference architectures that address entities of interest such as software, systems, enterprises, missions, systems of systems, families of systems, products (goods or services), product lines, service lines, technologies and business domains. The proposed standard will be universally applicable to — 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 and concepts used in reference architectures, — organizations performing conformity assessments against the requirements of reference- architecture-related standards and specifications, — organizations that serve as certification authorities that will benefit from the use of reference architectures, — organizations that need to mandate use of reference architectures, — providers of reference architectures, guidelines, training, education, evaluation or recommendations in architecture practice, — developers of reference-architecture standards, reference models, and related tools/technologies, — users of reference architectures. The application areas of this standard 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, logistics, hospitality, healthcare, supply chain, transportation, manufacturing, agriculture, production, and infrastructure. The proposed deliverable is part of the ISO 42000 architecture standards (e.g., 42010, 42020, 42030).