Zone invocations is placed on publisher sites and will display an ad. Different type of invocations are available and the difference is explained below.
The default choice. Is blocking, meaning that the page will not complete rendering until the ad server have delivered the ad. It can handle all types of ad materials, including third party tags, expanding ads etc.
The ad will be placed inside a non-blocking IFrame. Not suitable for expanding ads and composite zones are not supported.
The invocation will consist only of the placements click url. No ad will be displayed.
Will return a invisible pixel instead of the ad. Is suitable for cases when impressions should be measured but the actual displaying of the ad is handled in some other manner.
Video VAST 1.0
Generates a URL that in turn renders the VAST 1.0 XML
Video VAST 2.0
Generates a URL that in turn renders the VAST 2.0 XML