Meta Andromeda Advertising: The Creative-Led Playbook
Meta's Andromeda system chooses which ads even enter the auction by reading the creative itself, which makes creative diversity the primary targeting lever. The working approach is 15 to 20 genuinely varied live ads, a simplified Advantage+ structure with deliberate exclusions, and clean conversion signal held at an Event Match Quality above 7.
- Andromeda selects which ads reach the auction by reading the creative, so unselected creative is invisible at any bid.
- The working volume is 15 to 20 varied live ads, refreshed on cadence.
- Keep structure simple with Advantage+ and deliberate exclusions; signal quality gates everything.
- Lookalikes are mostly redundant on mature accounts and useful only as early scaffolding.
Why this matters
Meta's delivery logic changed in a way that many accounts have not adjusted to. Its Andromeda retrieval system now reads the ad creative to decide who should see it, rather than relying on the targeting you set. Accounts still running three tired creatives and stacked lookalikes tend to see results drift down without any obvious cause. Understanding how retrieval selects ads explains why creative, structure, and signal now matter more than targeting settings.
How Andromeda works
Andromeda sits at the retrieval stage of Meta's delivery pipeline. For each user, it narrows tens of millions of eligible ads to a small pool of viable candidates before ranking and auction begin, and it makes that selection largely by reading the creative against behavioural signals. Meta reports roughly 6% better retrieval recall and, in some segments, up to 8% higher ad quality. The advertiser-side implication is direct: creative that retrieval does not select is invisible regardless of bid, because it never reaches the auction.
The three levers
- 01
Creative diversity as a system
Plan a standing pipeline of 15 to 20 live ads spanning hooks (problem-led, proof-led, offer-led, objection-led) and formats (static, short video, carousel, UGC-style), refreshed on cadence with fatigued units retired weekly. Diversity opens new behavioural pockets; volume without it does not.
- 02
Simple structure, deliberate exclusions
Use Advantage+ as the primary campaign type, keep budgets consolidated so learning is not starved, and let exclusions do the guardrail work: existing customers out of acquisition, cart abandoners into their own lane. This is the structure that lifted a DTC brand's sales 138% on flat spend when we moved it off boosted posts, in the boosted-to-structured case study.
- 03
Signal quality as a monitored metric
Run Pixel and Conversions API together, deduplicated, with Event Match Quality above 7 and checked monthly. When a skincare brand's reported ROAS fell to 1.6x after iOS changes, rebuilding this layer restored it to 3.4x at a 98% match rate, in the ROAS tracking case study. The wider verification habit is in our tracking audit checklist.
What to stop doing
| Habit | Why It No Longer Helps |
|---|---|
| Stacking lookalikes on mature accounts | Behavioural signal already exceeds the seed; constraints narrow the retrieval pool without sharpening it. |
| Boosting posts as a strategy | Boosting buys reach without funnel structure, exclusions, or purchase optimisation. |
| Judging creative by opinion | Delivery is the judge; ship variants and read spend distribution and cost per result per creative. |
The practical constraint for most businesses is production capacity, since 15 to 20 varied creatives with weekly review exceeds what teams built for two refreshes a quarter can supply. The landing pages those ads point at need the same attention, which is the work of our landing page optimisation service, while the pipeline, structure, and signal side is paid media management. E-commerce catalogues give Andromeda the most to read, which is why creative systems sit at the centre of our e-commerce work.
Frequently Asked Questions
Andromeda is the retrieval stage of Meta's ads delivery system, rolled out across most objectives by late 2025. For each user it narrows tens of millions of eligible ads to a small candidate pool before ranking and auction, selecting largely from the creative matched against behavioural signals.
The working pattern is 15 to 20 live ads per campaign area, genuinely different in hook and format rather than recoloured. Diversity is the mechanism, because each distinct creative gives retrieval a different route to a different audience.
For established accounts, mostly not; the behavioural signal already exceeds a seed list, so added constraints narrow delivery without improving it. A 2 to 3% lookalike can act as temporary scaffolding for new accounts while signal accumulates.
Creative-based retrieval still learns from outcomes, connecting creative traits to the people who convert. It can only make those connections from the events you send, so Pixel plus Conversions API with an Event Match Quality above 7 is the baseline.
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