Facebook Ads platform, managed through Meta Ads Manager, reaches 3.07 billion monthly active users, making it the largest social media platform by audience. Advertisers run campaigns across the News Feed, Reels, Stories, Marketplace, In-Stream video, Groups, and Search. With 2.11 billion daily active users, Facebook delivers consistent daily reach at scale.
Who it reaches
Facebook’s largest user segment is 25–34-year-olds, followed by 35–44-year-olds. That makes it effective for B2C advertisers targeting adults with established purchasing habits. Facebook Marketplace is especially strong for retail and local commerce. Users browse it actively as a product discovery surface, not just a social feed.
Ad formats
News Feed ads run in image, video, carousel, and collection formats in the main scrolling feed. Reels ads appear between short-form videos. Facebook Reels perform best at 90–120 seconds, longer than on Instagram or TikTok, which allows more narrative depth. Stories ads run full-screen between user Stories.
Lead Ads capture name, email, and phone directly within Facebook, without sending users to an external landing page. Dynamic Ads pull from a product catalog. They automatically show the most relevant products to each user based on browsing behaviour.
AI targeting
Facebook’s ad delivery runs on Andromeda, Meta’s deep learning architecture introduced in late 2024. The system uses ad creative as a targeting signal, analysing engagement to determine the best audience. Advertisers set objectives and provide audience parameters. Andromeda handles optimisation from there.
In 2025, Meta consolidated many detailed interest categories into broader groups. Meta also removed detailed targeting exclusions. The result is less manual audience control, with greater reliance on AI-driven delivery optimised toward conversion outcomes.
Targeting options
Targeting covers demographics, interests, behaviours, and location. Custom Audiences let advertisers upload CRM data or build audiences from website visitors, app activity, or video engagement. Lookalike Audiences find new users who match the profile of existing customers.
Measurement
Facebook Ads integrates with the Meta Pixel and Conversions API. The Conversions API sends conversion data server-side, maintaining tracking accuracy when browser-based signals get blocked or limited.