Now that ESB has become an established product category, numerous ESB vendors are competing on architecture, connectivity options, ease of use and Quality of Service issues such as continuous availability. Since organizations have been putting ESBs to work in the real world for a few years now, there is better clarity on what other infrastructure is necessary to build, deploy, manage, and extract business value from a widespread SOA across an organization.
The list is fairly substantial, but I’ll focus on a few of the important ones.