What is the difference between the Options Dialog v2 overlay and the Adchoice Opt Out overlay?
The new options dialog v2 overlay allows for category and vendor level consent. The site user is able to change their consent preferences at anytime with the options dialog v2.
The Adchoice Opt Out overlay only allows for vendors to drop opt out cookies on the users' browser. (this will not put the vendors back into a preconsent state or change the site user's consent preferences)