Which term is often used to integrate other services?

• A. Service-Oriented Architecture
• B. Enterprise Service Bus
• C. Directory Services
• D. Data Entry

Answer: (C)

Integrating other services is typically accomplished with an Enterprise Service Bus. An ESB acts as the middleware that connects diverse applications, routes messages, and performs data transformation so services can communicate regardless of their underlying technologies. Directory services, like LDAP or Active Directory, store and locate information about users and resources to enable authentication and discovery, but they don’t coordinate or mediate service-to-service communications. Service-Oriented Architecture describes building software as interoperable services, but the actual mechanism that enables the communication between those services is usually the ESB. Data entry is unrelated to service integration. So the term most closely associated with integrating other services is the Enterprise Service Bus.