April 05
Prof. Ismael H. F. Santos -  ismael@tecgraf.puc-rio.br                                                          2
Enterprise Service Bus (ESB)
nESB provides the mechanism for continuously adapting the portfolio of available services to accommodate shifting needs.
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nRather than requiring constant updates to constituent services, the ESB can adaptively mediate among them.
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nFor example, if two services use slightly different formats for their messages, the ESB can translate between them.
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nAlternately, if a business change in one area requires a new version of    a service, the ESB can route  requests that require enhanced functionality to the new version while routing requests that assume only basic functionality to the old version.