Hey,
App monetization is something that is nowadays one of the best ways to generate ROI that you have invested in developing the app. There are two ways: One, you choose an ad network to integrate with the SDK and it will take care of everything. Second, if your app has a lot of traffic you can go for a mediation solution in which you can integrate multiple ads networks integrated. In both sentences, you need to get knowledge. For this, I`d like to suggest you get more information from this web & mobile dev company https://mova.io