Architecture of Apache Axis

 Admin Sub-system
    handles administration and configuration of the server
Service Sub-system
    implements the RPC exchange protocol
Provider Sub-system
    is the interface between Axis server and the external component methods that are to be exposed as webservice
Transport Sub-system
    receives and delivers the message from the service sub system
Encoding Sub-system
    manages encoding/decoding and serilization/deserilization between XML data types and Java Classes
Message Sub-system
    defines the structure of the different elements of a SOAP message and provides functionality for binding and parsing the different elements of these messages