Product Advertising API publishes its API through a WSDL. The default WSDL is located at http://webservices.amazon.com/AWSECommerceService/AWSECommerceService.wsdl. Note that the default WSDL and the latest WSDL may not be the same version. You can access a particular WSDL version by adding the version date in the URL, as in the following example:
For example, the 2013-08-01 WSDL can be found at http://webservices.amazon.com/AWSECommerceService/2013-08-01/AWSECommerceService.wsdlCopy
The WSDL contains all the API endpoints. To select the required endpoint, see your SOAP framework.