Whether you choose to sign up on a DSP or hire a programmatic ad agency will depend on your budget and other factors. Companion/banner ads usually appear on the screen while a user is listening to an audio track like a podcast or music, and as banner ads on internet https://codyaoyio.onesmablog.com/indicatoren-op-kosten-per-actie-cpa-u-moet-weten-68591278