Content delivery systems and methods

A method performed by an electronic device for rendering content, the method comprising:

• receiving, at a network interface of the electronic device, a first content item and a first electronic content license securely associated with the first content item, the first electronic content license identifying one or more content insertion slots within the first content item and specifying one or more criteria for selecting content items to insert into the one or more content insertion slots within the first content item;
• receiving, at the network interface of the electronic device, one or more second content items, the one or more second content items being selected for transmission to the electronic device based, at least in part, on at least one capability of the electronic device;
• receiving a request to render the first content item using the electronic device;
• selecting, using a digital rights management engine executing on the electronic device, based on information included in the first electronic content license, at least one content item of the one or more second content items to insert into at least one of the one or more content insertion slots within the first content item, wherein the selecting comprises:
• evaluating the one or more second content items against the one or more criteria, and
• evaluating one or more bids made in association with each of the one or more second content items against at least one objective function, wherein the selected at least one content item of the one or more second content items maximizes the objective function;
• and
• rendering the first content item via a rendering application executing on the electronic device, wherein rendering the first content item comprises rendering the selected at least one content item within the at least one of the one or more content insertion slots within the first content item in connection with rendering the first content item by the electronic device.