Definition: EIF Interoperability Level ABB is a Business Object setting guidelines for developing public services. The EIF defines four interoperability levels, which cover legal, organisational, semantic and technical interoperability. Each level deserves special attention when a new European public service is established. Source: European Commission, ISA Programme. The New European Interoperability Framework (EIF) for European public services. [Online] 2017 Source reference: (https://ec.europa.eu/isa2/eif_en.) Example: The following implementation is an example on how this specific Architecture Building Block (ABB) can be instantiated as a Solution Building Block (SBB): The EIF defines four interoperability levels, which cover legal, organisational, semantic and technical interoperability. Identifier: http://data.europa.eu/dr8/EifInteroperabilityLevelBusinessObject eira:ID: ABB340 ABB name: eira:EifInteroperabilityLevelBusinessObject Last modification: 2022-23-01