Meta Andromeda

Proprietary next-generation ads retrieval engine powering Meta's global advertising platform, not commercially available to third parties

Meta Andromeda is an internal AI-powered ads retrieval system developed and operated by Meta, designed to dramatically improve the relevance and quality of personalized advertising across Meta's family of apps. Rolled out in late 2024 and expanded globally in October 2025, Andromeda represents a significant leap in Meta's Advantage+ automation suite, combining advanced machine learning models with purpose-built hardware — specifically NVIDIA Grace Hopper Superchips and Meta's own MTIA (Meta Training and Inference Accelerator) chips — to process and rank massive ad candidate pools with unprecedented efficiency. The system delivers measurable improvements over its predecessors, achieving a +6% increase in retrieval recall and an +8% improvement in ad quality. These gains translate directly into better advertiser ROI and more relevant user experiences, reinforcing Meta's dominant position in the digital advertising market. Andromeda operates as a core infrastructure layer within Meta's ads stack, enabling the retrieval of the most relevant ads from billions of candidates in real time. Within the AdTech ecosystem, Meta Andromeda is significant because it exemplifies the convergence of custom silicon, large-scale AI, and programmatic advertising infrastructure. By vertically integrating hardware and software for ads retrieval, Meta reduces latency, increases throughput, and improves model expressiveness — capabilities that are difficult for competitors to replicate without similar scale and infrastructure investment. Andromeda is not a standalone commercial product but a proprietary engine that powers Meta's advertising business globally.