Meta quietly rebuilt the engine that decides which ads you see. Most advertisers haven't noticed. The ones who adapt first will win the next two years.
Meta Andromeda is a machine-learning retrieval system that sits at the front of Meta's ad-recommendation pipeline. It scans tens of millions of possible ads and shortlists the few thousand most relevant to each person, before the ranking stage picks the winners. It's the part of the system that decides which ads even get considered.
What changed
Retrieval used to be the dumb part of the funnel, a rough first filter. Andromeda makes it the smart part. Meta rebuilt it on deep neural networks running on NVIDIA Grace Hopper hardware, with roughly 10,000x the model capacity of what came before. Meta reports a +6% lift in recall (better ads surfaced) and +8% in ad quality. It's the engine underneath Advantage+, and it rolled out broadly through 2025.
Translation: Meta got dramatically better at finding the right ad for the right person, automatically, from a far bigger pool, without you hand-building the audience.
What it means for your ads
Here's the part the targeting-obsessed crowd is missing. When the machine gets this good at matching, micro-targeting stops being the edge. You're no longer winning by slicing audiences thinner than the next agency. You're winning by feeding the machine two things it can't generate itself: strong creative and clean signal.
Strong creative, because Andromeda can only choose between the ads you give it, and it rewards the ones people actually respond to. Clean signal, because the system learns from the events you send back (a well-implemented Conversions API, high Event Match Quality). Get those two right and the machine works for you. Get them wrong and no targeting trick saves you.
So the job changes. Less time in Ads Manager pulling levers. More time making more, better, on-brand creative, consistently, not in bursts.
Why this is the case for Always-On
Which is exactly the case for an Always-On System. Andromeda rewards brands that show up with fresh, strong creative all the time, not the ones who go dark between campaigns and flood the feed for two weeks a quarter. The algorithm now pays a premium for presence. We call that the Always-On System: continuous creative production, fed into the machine, compounding while everyone else restarts from zero.
The rules changed. They'll change again. The brands that build a system instead of chasing each update are the ones that stay ahead.
