What exactly is SQL Server 2005 Service Broker?

Answer 1

Servive brokers allow build applications in which independent components work together to accomplish a task. They help build scalable, secure database applications. The brokers provide a message based communication and can be used for applications within a single database. It helps reducing development time by providing an enriched environment.

Answer 2

Scalable, secure database applications can be developed by using SQL Server 2005 Service Broker. Apart from Database Engine, message-based communication platform is provided which enables the independent application components to perform as a functioning. Service Broker includes an infrastructure for asynchronous programming. This could be used for applications for single database as well as for distributed applications. The application development time will be reduced by providing the necessary infrastructure for building distributed applications.