Microsoft is continously adding physical nodes to the Windows Azure Content Delivery Network (CDN to further enhance the ability to deliver performance-sensitive content around the world. Latest addition includes: Moscow, Russia. This brings the total number of Windows Azure CDN nodes to 23.
A Windows Azure CDN customer's traffic may not be served out of the physically "closest" node; many factors are involved including routing and peering, Internet "weather", and node capacity and availability. We're continually grooming our network to meet our Service Level Agreements and our customers' requirements.
Offering pay-as-you-go, one-click-integration with Windows Azure Storage, the Windows Azure CDN is a system of servers containing copies of data, placed at various points in our global cloud services network to maximize bandwidth for access to data for clients throughout the network.
The Windows Azure CDN can only deliver content from public blob containers in Windows Azure Storage - content types can include web objects, downloadable objects (media files, software, documents), applications, real time media streams, and other components of Internet delivery (DNS, routes, and database queries).