An integrated data network management and data service provisioning environment is provided. The integrated environment includes legacy software application code and current software application code each augmented with code portions enabling exchange of information therebetween via an interworking layer. A facility for participation in and interacting with the integrated environment is also provided. A man-machine interface is integrated across different applications which themselves may be executed on different computers to provide a seamless exchange of information. The advantages are derived from enhanced usage efficiencies in providing data network management and service provisioning solutions. The interworking layer also provides for security enforcement across applications participating in the integrated environment.