juniorSOA
What is the role of an Enterprise Service Bus (ESB)?
Updated Apr 28, 2026
Short answer
A middleware layer used to route, transform, and mediate communication between services.
Deep explanation
SOA focuses on integrating disparate systems using standardized interfaces. By abstracting business logic into services, organizations can leverage legacy systems while building new capabilities. It relies heavily on XML-based standards and centralized governance through an ESB.
Real-world example
A banking system where 'GetBalance' and 'TransferFunds' are discrete services accessible by web, mobile, and branch apps.
Common mistakes
- Confusing a simple library or DLL with a network-accessible SOA service.
Follow-up questions
- What is UDDI?