John Gilbert

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Service Oriented Architecture (SOA) is not so much a new technology as a new state of mind. Technology for implementing business logic in the middle tier and exposing it as a service has been around for years. Yes, the technology is more standardized now and more widely accepted. What's really new is the growing practice of approaching SOA with an enterprise-wide mindset in which an organization takes a holistic approach to identifying the services they provide. The rise of the Enterprise Service Bus (ESB) is linked to this new enterprise-wide view. ESB and SOA are complementary. One of the tenets of SOA is loosely coupling services. Message-Oriented Middleware (MOM) is used to connect decoupled systems. An ESB is created by using standards-based MOM providers consistently across an enterprise to glue decoupled services together. When used together this ESB-powered... (more)