What is SOAP? Why is SOAP required? Advantages of SOAP
3. Simplicity : SOAP messages are in very simple XML format. 4. Scalability : SOAP uses HTTP protocol for transport due to which it becomes scalable. Disadvantages of SOAP. The following are the disadvantages of SOAP. 1. Slow : SOAP uses the XML format which needs to be parsed and is lengthier too which makes SOAP slower than CORBA, RMI or IIOP. 2.