You manage an application running on Azure Web Sites Standard tier. The application uses a
substantial amount of large image files and is used by people around the world. Users from Europe
report that the load time of the site is slow. You need to implement a solution by using Azure
services. Which two actions will achieve the goal? Each correct answer presents a complete
solution.

A.
Configure Azure blob storage with a custom domain.

B.
Configure Azure CDN to cache all responses from the application web endpoint.

C.
Configure Azure Web Site auto-scaling to increase instances at high load.

D.
Configure Azure CDN to cache site images and content stored in Azure blob storage.

Explanation:
Blobs that benefit the most from Azure CDN caching are those that are accessed frequently during
their time-to-live (TTL) period. A blob stays in the cache for the TTL period and then is refreshed
by the blob service after that time is elapsed. Then the process repeats.
http://azure.microsoft.com/en-us/documentation/articles/storage-custom-domainname/
http://blog.maartenballiauw.be/post/2013/08/20/Using-the-Windows-Azure-Content-DeliveryNetwork-CDN.aspx