The IronSource founders sold an ad tech company for $4.4 billion. Their next bet is that AI agents will replace the ad buyers their old company served.

The founders of IronSource spent a decade building tools that helped mobile app developers monetise their products through advertising. They sold that company to Unity for $4.4 billion in 2022, watched Unity dismantle the ad network they had built, left in 2024, and have now returned with a company whose premise is that the entire […] This story continues at The Next Web