Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for providing a call to action at the end of a resource. In one aspect, a method includes receiving a request for media content to present on a user device, the request including a second request for third-party content to present with the media content, identifying, user device capabilities that describes information about system compatibility for the user device, determining third-party content to present with the media, the third-party content including a first presentation time duration indicative of a length of time the third-party content is presented, determining that an end cap is compatible with the user device and related to the third-party content, the end cap providing an interactive opportunity to request subsequent resources for the user device, and transmitting data to present the third-party content, the end cap, and the media.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for providing a call to action at the end of a resource. In one aspect, a method includes receiving a request for media content to present on a user device, the request including a second request for third-party content to present with the media content, identifying, user device capabilities that describes information about system compatibility for the user device, determining third-party content to present with the media, the third-party content including a first presentation time duration indicative of a length of time the third-party content is presented, determining that an end cap is compatible with the user device and related to the third-party content, the end cap providing an interactive opportunity to request subsequent resources for the user device, and transmitting data to present the third-party content, the end cap, and the media.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for providing a call to action at the end of a resource. In one aspect, a method includes receiving a request for media content to present on a user device, the request including a second request for third-party content to present with the media content, identifying, user device capabilities that describes information about system compatibility for the user device, determining third-party content to present with the media, the third-party content including a first presentation time duration indicative of a length of time the third-party content is presented, determining that an end cap is compatible with the user device and related to the third-party content, the end cap providing an interactive opportunity to request subsequent resources for the user device, and transmitting data to present the third-party content, the end cap, and the media.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for providing a call to action at the end of a resource. In one aspect, a method includes receiving a request for media content to present on a user device, the request including a second request for third-party content to present with the media content, identifying, user device capabilities that describes information about system compatibility for the user device, determining third-party content to present with the media, the third-party content including a first presentation time duration indicative of a length of time the third-party content is presented, determining that an end cap is compatible with the user device and related to the third-party content, the end cap providing an interactive opportunity to request subsequent resources for the user device, and transmitting data to present the third-party content, the end cap, and the media.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for providing a call to action at the end of a resource. In one aspect, a method includes receiving a request for media content to present on a user device, the request including a second request for third-party content to present with the media content, identifying, user device capabilities that describes information about system compatibility for the user device, determining third-party content to present with the media, the third-party content including a first presentation time duration indicative of a length of time the third-party content is presented, determining that an end cap is compatible with the user device and related to the third-party content, the end cap providing an interactive opportunity to request subsequent resources for the user device, and transmitting data to present the third-party content, the end cap, and the media.