The name EUROPA refers to the top level institution-independent site http://europa.eu. However, the term EUROPA is also often used to refer to all sites managed by the Commission. The Inventory of EUROPA websites offers a comprehensive list with detailed information for each website.
The sites of all EU institutions (European Parliament, European Commission, Council, etc.) are part of the EUROPA family and can be accessed through the Europa.eu interinstitutional website. All institutions have the URL - http://institution.europa.eu, for example http://europarl.europa.eu.
Sites managed by the Commission have to comply with the guidelines and standards set out in the IPG. Sites managed by the other institutions do not have to comply with IPG standards and guidelines (see diagram).