Programmatic advertising replaces manually negotiated ad deals with automated, real-time auctions — every ad impression in an app can be bid on by multiple advertisers in the time it takes the screen to load.
How real-time bidding works in practice
When an ad slot becomes available, the app's mediation layer sends a bid request to connected demand sources; advertisers respond with bids in milliseconds, and the highest bid wins the impression. This entire exchange happens before the ad actually renders, invisible to the end user.
Why it matters for developers
Programmatic demand generally means better fill rates and more competitive pricing than relying on a single direct-sold ad network, since more advertisers are competing for the same inventory in real time. Most modern mediation platforms are built around programmatic demand by default, so developers benefit from it without having to manage the auction mechanics directly.