Even if you remember nothing else about ESB (Enterprise Service Bus) from my earlier rant, this should be sufficient:ESB != Expensive Shrinkwrapped Broker
ESB = Endpoints (SOAP & BPEL)
As my old friend Jim Webber likes to say, the SOAP message _is_ the Bus. It's a piece of Zen-like wisdom, and it takes a while to get one's head around it, but once you "get" it, you'll never fall for vendorspeak again. I am so over centralised brokers calling themselves ESBs.