Websphere Enterprise Service Bus

The architecture of Websphere Enterprise Service Bus (WESB) centered around the Service Integration Bus (SIB), which facilitated communication between applications. Key components included mediation flows, message sets, and various connectors. The SIB used messaging protocols like JMS and WebSphere MQ for inter-component communication.

Databases were used for storing configuration data and message persistence. The administrative console provided interfaces for managing the SIB, mediation flows, and security policies. 509 certificates, and SAML tokens.

The access control model was role-based, managed through the administrative console. Encryption was used for securing messages in transit (SSL/TLS) and at rest (database encryption). Monitoring capabilities included dashboards for message flow monitoring and performance metrics.

WESB's architecture was designed for enterprise-level integration, with a focus on reliability and scalability. Compared to competitors, WESB's strength was its deep integration with the IBM ecosystem, particularly WebSphere MQ and other IBM middleware. The main difference was the focus on complex, enterprise-level integration within IBM environments.

The architecture supported various integration patterns, including point-to-point, publish-subscribe, and request-reply.