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Enterprise Service Bus (ESB)

Definition - What does Enterprise Service Bus (ESB) mean?

An enterprise service bus (ESB) is an integrated platform that provides fundamental interaction and communication services for complex software applications via an event driven and standards-based messaging engine, or bus, built with middleware infrastructure product technologies. The ESB platform is geared toward isolating the link between a service and transport channel and is used to fulfill service-oriented architecture (SOA) requirements.

Opinions regarding ESB's exact definition differ because the term often references ESB's underlying software infrastructure.

Techopedia explains Enterprise Service Bus (ESB)

ESB includes the following core components:

  • Architectural platform
  • Software product
  • Software product package

An ESB provides a conceptual layer for an established enterprise messaging system, which allows integration architects to apply messaging advantages without writing code. Unlike traditional enterprise application integration (EAI) techniques, such as a monolithic hub or spoke structure stack, an ESB is based on simple functions separated as elemental parts with distributed deployment and collaboration, as required.

Additionally, an ESB has metric-based SOA and SOA 2.0 structural elements that provide flexibility and multiple transport media capability. Most ESB providers integrate SOA values while accounting for independent message formats.

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