Simple, Open Standards Queuing Web Service
Web Service Message Queue (WSMQ) is a simple message queuing alternative for enabling reliable, professional-grade applications. Compared with other popular message queues, WSMQ is easier to deploy, write code for, manage and scale.

Simple Deployment Options
WSMQ Hosted - The hosted version allows you to focus on your application and on solving business problems, not managing your queuing infrastructure.
WSMQ (SQL Server Version) - The installable SQL Version of WSMQ is designed to be a high performance, scalable queuing solution for installation in behind the firewall. All queues, users and messages are stored in SQL, allowing multiple WSMQ servers accessing a single message store.