Azure CDN is a global content delivery network for distributing content to local servers to improve latency and performance. Azure CDN works with either a storage account or an Azure Web Site as the source of its cache and then uses HTTP headers to dictate how long content is cached within its network.
Microsoft has just released a new Azure CDN Premium service which provides additional fine grained rules for managing how content is cached.
In addition, Microsoft has added a key feature that was missing – the ability to purge content. You can now go either through the Azure Portal or through the new CDN API and invalidate your CDN cache or individual URLs.
Microsoft has also rolled out new pop locations in India, Australia and South America.