Many developers do not need to use AppLovin ad delegates. Here are some reasons why you might need them:

• When you intend to use Rewarded Video. See the MAX Integration Guide for more information on integrating rewarded video.
• When you need information about a user’s interaction with an ad. For instance, if you need to know when a user closes an interstitial video ad so you can resume background music in your app.
• When you need information about an ad unit’s lifecycle. For instance, if you need to know when a banner changes, an interstitial begins obstructing the screen, etc.