APP has arisen from the ATOM community as an application-level PROTOCOL on top of HTTP to allow the publishing and editing of web resources. The unit of MESSAGES between an APP server and a client is based on the Atom XML-document format.

The Atom Publishing Protocol defines a set of operations between an APP service and a user-agent using HTTP and its mechanisms and the Atom XML-document format as the unit of messages.

APP first defines a service document, which provides the user agent with the URI of the different collections SERVED by the APP service.

APP has arisen from the Atom community as an application-level protocol on top of HTTP to allow the publishing and editing of web resources. The unit of messages between an APP server and a client is based on the Atom XML-document format.

The Atom Publishing Protocol defines a set of operations between an APP service and a user-agent using HTTP and its mechanisms and the Atom XML-document format as the unit of messages.

APP first defines a service document, which provides the user agent with the URI of the different collections served by the APP service.