http://www.directoryservicesinc.com/IDM-Technical-Blog/bid/48105/Why-an-ESB-for-Identity-Management-Makes-Good-Sense

Just wanted to note a slight expansion to just an IDM implementation, the use of Enterprise Service Bus systems would improve the distributed systems layout the University has. By definition certain places have separated systems and the University is no exception, a VLE, Email, Library etc, if the information stored in each of these systems was situated in one location it would mean once the IDM has validated the users identity the user can take any information they require from one source, reducing the complex nature found in certain distributed systems