A system is disclosed for delivering dynamically-rendered web experiences via implementing a provider interface in a provider framework where the interface defines supported behaviors for interfacing with external content in an external content repository, and where the interface defines at least one external object and specifies at least one method for implementing the supported behaviors for the object. The provider framework discovers supported behaviors upon instantiation of a provider implementation class embodied in implementation of the provider interface. A connection is engaged to the external repository with the supported behaviors using the interface to connect to and expose the external content. During web content delivery, the system accesses the provider connection and dynamically integrates external content with system-managed content in a delivered web page.