SOAP web services
Before the xMatters REST API became available, many integrations relied on the Simple Object Access Protocol (SOAP) web services. Developed primarily as an interface for premises-based deployments, the SOAP API allows remote function calls to the xMatters system via HTTP requests using SOAP syntax and formatting. For more information about the SOAP API and how to access the WSDL, see SOAP web services.
We're moving from the SOAP API to the xMatters REST API. The SOAP API will be supported until further notice but will eventually be deprecated, so you should use the xMatters REST API going forward.