Can I use the app deep link/easy deep link feature in Facebook ADs?

Do you want to deep link to a third party app (e.g., Instagram, YouTube, Ebay) from within a Facebook AD?

Unfortunately, you cannot deep link to a third party app (e.g., Instagram, YouTube, Ebay) from your Facebook ADs.
In fact, Facebook AD’s policies prohibit you from exiting the Facebook app and deep link to a third-party app.

Hint 1: You can still direct visitors from your Facebook AD to a landing page and embed the deep link within a button, an image or some text in the landing page itself, which then redirects visitors to the third party app.

Hint 2: You can still direct visitors from your Facebook AD to a Facebook post with the deep link inside.

Do you want instead to create a deep link to your own app?

In this case, Facebook does not prohibit you from doing this within its ADs and you can safely use deep links to lead your users to your own app.