How does a message broker enhance system integration?

A message broker enhances system integration by managing message routing, transformation, and delivery. This means that it acts as an intermediary that facilitates communication between different applications or services by ensuring that messages are directed to the appropriate destination, transforming the messages if necessary, and delivering them in a reliable manner.

By performing these functions, the message broker decouples the systems involved, allowing them to interact without needing to know details about one another’s implementations or data formats. This approach not only improves system reliability and scalability but also simplifies the overall architecture of the integrated systems.

The other options do not describe the core functions of a message broker effectively. Centralizing data in a database is not the primary role of a message broker; instead, it focuses on messaging rather than data storage. While simplifying user interface design might be a benefit of improved integration, it is not a direct function of a message broker. Enforcing security policies can be important in integration, but this is typically handled by security mechanisms outside of the core functions of a message broker.