This principle assigns responsibility for data to domain teams, ensuring the ownership of both analytical and operational data from a rests with the originating domains. Each domain, representing a specific area or function, is accountable for managing its own data, ensuring it is properly governed and conditioned for organizational use. Domain owners, typically the entities closest to the data sources with the most knowledge of the data and its consumers' needs, establish protections, sharing protocols, and governance standards within their domain. Data Domains create and deliver Data Products that are well-defined, accessible, trustworthy, interoperable, and secure, supporting both local and organizational data requirements.