We provide technical support for all Windows Azure services released to General Availability, including CDN, through Windows Azure Support, starting at $29/month. Billing and subscription management support is provided at no cost.
We guarantee that at least 99.9% of the time CDN will respond to client requests and deliver the requested content without error. We will review and accept data from any commercially reasonable independent measurement system that you choose to monitor your content. You must select a set of agents from the measurement system’s list of standard agents that are generally available and represent at least five geographically diverse locations in major worldwide metropolitan areas. To learn more about our SLA, please visit the SLA page.