An overlay ad is an overlay-player widget that is placed over a video player. It is a fully customizable overlay player that will show video ads (VAST/VPAID) prior to the video content. Clicking on the overlay usually takes the users to a landing page assigned by the advertiser. Users can close an overlay ad by clicking on the “x” button in the top-right corner or skip the ad if you choose so in your settings.
Orphan Page
An orphan page is a page that is not linked to any section of your site so that users cannot find it on your site.