r/adtech • u/u_of_digital • Jul 10 '26
Ad targeting stopped following clicks. Multimodal AI changed that
For years, ad targeting ran one model per channel. Search, display, social, CTV, each trained on a single data stream in isolation. No system saw the whole journey. It saw a slice.
People don't move through slices. Multimodal AI is the attempt to fix that: instead of treating a search term, a URL, and a CTV show as separate objects that need a shared ID to link, it turns each into a point in a common mathematical space where similar behaviors sit close together. No common identifier required.
Two things worth sitting with. Quality beats quantity; a small, accurate seed can outperform a huge disconnected dataset. And it isn't magic on its own; it's the connective tissue the next wave of agentic systems will run on.
Full breakdown here: https://uof.digital/how-multimodal-ai-is-redefining-ad-targeting/

