Simple Object Access Protocol (SOAP) is an XML-based network communication protocol for web services. A web service call in SOAP is represented as an XML document, consisting of an external enclosing element, called SOAP envelope, a message header, and the body.
A SOAP service provides an object-oriented access to the resource. NAV can publish pages and codeunits through SOAP services, allowing objects' methods to be called from external applications over the network.
The first recipe shows how to enable web services on a NAV server instance to publish a codeunit as a SOAP web service.