Welcome to the ESB Truth Test The Enterprise Service Bus (ESB) delivers a completely new approach to integration. Built on Web services and industry standards, it stands in stark contrast to the proprietary integration technologies of the past. A True ESB is built from the ground up around Web services, XML and related standards. There is no proprietary EAI server at the core. It doesn't require a particular application server or message transport to function. It works with all your existing applications and data sources, and allows you to rapidly and flexibly build new services. As the ESB rapidly gains traction in the marketplace, you should be wary of the wide variety of legacy integration vendors as they attempt to re-position their offerings as ESBs by adding Web services veneers around their existing, proprietary product offerings. Working from the major industry analysts' definition of an ESB, we've created the "ESB Truth Test" to help you evaluate the various ESB offerings to determine if you are working with a real ESB, or just repackaged proprietary middleware. Take the ESB Truth Test! Cape Clear Software. True ESB.