JBoss A-MQ is based on Apache ActiveMQ. It's lightweight, has excellent performance, and can be configured to fit a variety of use cases.
One of those use cases, and a requirement that you'll find in most enterprises, is being able to have a messaging backbone that can withstand unplanned faults, planned outages, and other disaster scenarios. Scott Cranton and Jack Britton will be giving a webinar tomorrow on how to deploy and configure JBoss A-MQ to be highly available (HA) and give lots of good tips and tricks for complex scenarios, cloud deployments, and using Fuse Fabric.
The top companies in banking, e-commerce, retail, and health care, and others all use ActiveMQ and/or JBoss A-MQ. If you're interested in learning more about deployment in the enterprise, make sure to catch Scott and Jack's webinar!