Undoubtedly, as the Enterprise Service Bus (ESB) continues to emerge as a hallmark of service-oriented architecture (SOA), the competition between open source and proprietary products will continue to heat up. Granted, ESB is a well-established category of infrastructure software. Enterprises across the world (medium to large) rely on this technology to provide the reusable business services for its applications, business processes and users. In parallel, the ESB market has proven ready for open source disruption with the following serving as indicators of such:
- Very little "new blood." No new proprietary vendors have rolled out ESBs over the past two years. "New" products have been the result of existing vendors extending the capabilities of older enterprise application integration offerings to include ESB-esque features like Web service support and business service orchestration.
