>If I want a worldwide ad (is that even a thing?) With regards to targeting: yes, you can target any country (and all of them). With regards to reach: yes, be

>If I want a worldwide ad (is that even a thing?) With regards to targeting: yes, you can target any country (and all of them). With regards to reach: yes, because you'll reach the user on pretty much any site/app with ads, so it's virtually "running worldwide" (from the user's point of view).