Not in the traditional sense. Typically, ad demand sources (ad networks, ad mediation platforms, exchanges) take around 40% revenue share from your ad revenue regardless of performance.
Our revenue margin only comes from the revenue boost as a result of our ad optimization technology. Since the boost for each impression differs, our margin varies dynamically for each impression to balance out to an average of 10% of your total revenue.
We operate in a win/win model where Appodeal earns only when publishers earn (even) more as a result of our ad optimization technology.
Check out this post for more details.