System and method for inserting advertisements from multiple ad servers via a master component

A system and method for rendering content may include an ad insertion system and/or content provider that, responsive to a request for media content from a terminal, provides to the terminal the media content, a program module, and ad insertion instructions, the ad insertion instructions including at least one link to a respective ad content providing entity. The terminal may render the media content via a media content player running on the terminal. For each of a plurality of ad insertion points during the rendering of the media content, the terminal may execute the program module to access a link of the at least one link, and, responsive to receipt of response data that is returned in response to the link access, load a content fetching program referenced by the response data, the loaded content fetching program subsequently obtaining ad content for rendering at the terminal.