Articles 5, 6 and 7 are the compliance backbone. Article 5 contains direct obligations such as limits on combining or cross-using personal data without consent, anti-steering restrictions, communication and contracting rights for business users, access for end users to externally acquired content, complaint freedom, tying restrictions for identification, browser engine and payment services, and advertising transparency for advertisers and publishers.
Article 6 adds obligations that may be further specified by the Commission. The operational controls typically touch non-public business-user data, uninstall and default-choice flows, third-party app stores and software installation, ranking fairness, switching, interoperability with operating system or virtual assistant features, ad measurement access, end-user data portability, business-user data access, search-data access, FRAND access conditions, and termination terms.
Article 7 is narrower but technically demanding. It applies where a gatekeeper provides a listed number-independent interpersonal communications service and requires requested interoperability for specified basic functionalities while preserving security, including end-to-end encryption where applicable.