Methods and systems for interface data utilization are described. In one embodiment, a provider server may offer resources and an application server may offer functionality not provided by the resources of the provider server. A user request may be received through the source user interface. A determination may be made whether the user request contains a request to access a functionality that is not offered by the provider but is offered by an application that is communicatively coupled to the provider via a network. In response, an electronic communication may be established between the provider and the application via a network. A policy of the provider may be accessed from a first database, and interface definition data may be accessed from a second database different from the first database. Target interface data may be rendered based on the policy of the provider and the interface definition data.