The European Interoperability Framework (EIF) is a set of recommendations which specify how Administrations, Businesses and Citizens communicate with each other within the EU and across Member States borders.

The term was coined by the European Commission in the European Interoperability Framework where such interfaces are recommended to improve the interoperability of public administrations that internally use different standards.

It is also the recommended e-GIF (e-Government Interoperability Framework) standard for use by Government agencies in web applications.

In Europe, for instance, the European Commission and its IDABC programme issue the European Interoperability Framework.

Being among the 'horizontal measures' of the IDABC, it is established as a permanent implementation of the principles stipulated in the 'European Interoperability Framework' (EIF).

The European Union communicated the following definition in its European Interoperability Framework:

The Free Software Foundation Europe (FSFE) uses a definition which is based on the European Interoperability Framework v.1, and was extended after consultation with industry and community stakeholders.

The Foundation for a Free Information Infrastructure's definition is said to coincide with the definition issued in the European Interoperability Framework released on 2004.

With the publication of "e-Ping Interoperability Framework", Brazil became the first South American country to officially recommend the adoption of OpenDocuments within the government.

Manages the development of the NCOIC's Interoperability Framework (NIF) and champions its use within the consortium.