We need to serve the ads for you so that we can track income in all the experiments, resolve discrepancies, create all the ad codes for the tests and generally manage your inventory for you.  
Ezoic is an Google Certified Publishing Partner, and has set up a bidding system for about 250+ premium ad networks (including AdSense) to bid for your inventory in real time (RTB) - so we will be offering each separate ad to the market to bid upon.  This means higher eCPM's and a good steady source of income for all our publishers.
We collect the money from our different advertising partners and we pay you after 30 days (so January income gets paid at the end of February for example). You have access to our user dashboard at all times where you can monitor revenue and your earnings daily.