1. The document discusses the ISA2 Catalogue of Public Services project. The project aims to facilitate the reuse of interoperability solutions by European public administrations by identifying, creating, and operating interoperability solutions in a cross-border, cross-sector, and user-centric manner. 2. The project has developed several products including the Core Public Service Vocabulary Application Profile, a common data model for representing life events, business events, and public services. It has also developed reusable tools for managing structured information about public services. 3. Using a common data model like the CPSV-AP allows public services catalogues to be gathered with one application programming interface and exchanged across borders more easily.