This document discusses caching services available on Windows Azure, including content delivery networks (CDNs) and caching. It describes how CDNs deliver content closer to end users, and caching stores frequently accessed data closer to Azure applications. Caching on Azure can be done through dedicated roles, co-location with applications, or shared caching services. The document outlines characteristics of CDNs like dedicated endpoints and worldwide datacenters. It also provides examples of caching configuration and workflows in Visual Studio and code samples for putting and getting items from the cache.