A system, method, and computer readable medium for managing CDN service providers are provided. A network storage provider storing one or more resources on behalf of a content provider obtains client computing device requests for content. The network storage provider updates request processing information based on the process requests for content. The network storage provider then makes a recommendation regarding initialization of a CDN service provider as a function of the updated request processing information. Subsequent client computing device requests for resources can be provided to the recommended CDN service provider utilizing alternative resource identifiers.