SOAP Web services APIs Special APIs are provided for use in creating SOAP Web services. High-level and low-level SOAP APIsHigh-level APIs use specially-designed classes to implement your Web service's function with minimal coding, while low-level APIs use standard HTTP classes that require you to code everything by hand.When to use high-level SOAP APIsThe recommendation is to use the high-level APIs wherever possible to implement SOAP Web services.When to use low-level SOAP APIsThe recommendation is to use the high-level APIs wherever possible to implement SOAP Web services.