SOAP (Simple Object Access Protocol ) - Understanding

SOAP - Simple Object Access Protocol

1. Consider a scenario where Application A needs to communicate with Application B
2. Application A needs to get status of credit card from Application B
3. In this case, web service will be created on application B
4. Irrespective of underlying technology, Application A will be able to send SOAP requests containing (Credit card no.) to Application B web service.
5. Application B web service will process request and generate SOAP response which will be sent to Application A

Refer below diagram :

Below are actual SOAP request and response calls captured in Burpsuite :

SOAP - Youtube Video