CEF building block to allow public administrations to exchange electronic data and documents with other public administrations, businesses and citizens, in an interoperable, secure, reliable and trusted way.
eDelivery is based on the concept of a four corner model, where the end entities (corners one and four) exchange messages via Access Point intermediaries (corners two and three). eDelivery standardises the communication only between these Access Point intermediaries. Communication between Access Points and end entities may use any communication protocol.
Definition from https://ec.europa.eu/cefdigital/wiki/display/CEFDIGITAL/CEF+Glossary
