This document provides an overview of WSO2 Message Broker 2.2.0. It introduces the presenters, describes WSO2 as a company and what they deliver. It then explains messaging models like queues and topics. The key highlights of WSO2 MB 2.2.0 include improvements to clustering, the addition of a dead letter channel and flow control capabilities. Example use cases are also presented, such as for asynchronous and reliable messaging.