# F3 Lightning: How Meta Accelerates Ads ML Features to Production at Scale > Source: > Published: 2026-11-03 17:00:35+00:00 Facebook Feature Framework (F3) is Meta’s framework for authoring, compiling, and serving the machine learning features underlying ads ranking models, where a single request can require more than 20,000 features. We first presented F3 at AI @ Scale 2020. F3 reduced execution computational costs by compiling all features into a single merged graph, but that [...] The post [F3 Lightning: How Meta Accelerates Ads ML Features to Production at Scale](https://engineering.fb.com/2026/11/03/ml-applications/f3-lightning-how-meta-accelerates-ads-ml-features-to-production/) appeared first on [Engineering at Meta](https://engineering.fb.com).