We've been creating them in one form or another for years. The message broker vendors, including Active Software Inc., New Era of Networks Software Inc., Century Analysis Inc., and TSI International Software Ltd., are really just turning the concept into products. Federal Express Corp. They saw the need, did not see the product, and thus created their own message broker to meet a business demand. Traditional middleware such as MOM only solves part of the problem. Message brokers do not replace such traditional middleware as MOM, RPC, and distributed TP monitors.
Message brokers build on top of existing middleware technology, most often on messaging middleware.
Although it provides an effective means of communication among applications, it does little else. Many components of a business integration solution are neither middleware nor applications. These are typically routing, reformatting, and flow components. These components, which can be placed in an application or in the middleware, are a better architectural fit when placed within message brokers, providing a central point of integration. Because the technology is so new, each vendor takes its own approach to solving the message brokering problem.