Abstract: A delivery method and system of dynamic embedded web output on a web page in a browser on a client device is provided. A web page contains an embed code for an embeddable unit. A content delivery network provides an embedded URL specified in the embed code. The URL contains executable static runtime code using a unit ID. The unit ID is passed to a dynamic server which performs a lookup to convert the unit ID into a cache key URL. The cache key URL points to a location on the content delivery network and encodes a cache key containing information for the embeddable unit. The client device loads the cache key URL, which targets the content delivery network to make a request for the embeddable unit. The content delivery network serves the embeddable unit to the client device on which the embeddable unit is displayed or updated.