DEFINITION: This ABB is a Business Agnostic European Legal Act which lays down rules to facilitate the use of electronic signatures and to contribute to their legal recognition. It establishes a legal framework for electronic signatures and certain certification-services in order to ensure the proper functioning of the internal market. Source: https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwiN7b_k9c_1AhVDlP0HHVCKC2wQFnoECA4QAQ&url=https%3A%2F%2Feur-lex.europa.eu%2Flegal-content%2FEN%2FTXT%2F%3Furi%3Dcelex%253A31999L0093&usg=AOvVaw0vmoZ7OuBVG0wowMxaZ649 INTEROPERABILITY SALIENCY: IoP Dimension: Governance IoP The Binding Instrument ABB is relevant for interoperability as, by being a specialisation of Legal Act, it makes mandatory the implementation of the policy (and therefore the underlying interoperability implications).