DESCRIPTION: It is a legal resource on governance rules enabling collaboration between digital public services cross legal jurisdictions. Generally speaking it is of a generic not binding nature like the declarations of Tallinn and Berlin (typically involving many legal jurisdictions). Legal agreements of binding nature typically take the form of binding legal acts like the reference list of offences punishable in the European arrest warrant (2002/584/JHA: Council Framework Decision of 13 June 2002). Based on EIF: https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=celex%3A12016E207 INTEROPERABILITY SALIENCY: Not applicable EXAMPLES: The following implementation is an example on how this specific Architecture Building Block (ABB) can be instantiated as a Solution Building Block (SBB): An example of a treaty that does have provisions for further binding agreements is the UN Charter. By signing and ratifying the Charter, countries agreed to be legally bound by resolutions passed by UN bodies such as the General Assembly and the Security Council. Thus, UN resolutions are legally binding on UN Member States, and no signature or ratification is necessary.