Fastlane is a web-based marketing platform built around Senna, an AI agent for advertising and social content workflows. The official site says Senna uses a brand website and advertising history to learn a brand, researches competitors’ ads and customer reviews, and creates campaign concepts including remixes, AI-creator content, static ads, and memes. Users can review creative before launch; Fastlane also describes bulk launching ads in Meta Ads Manager and scheduling organic posts to Instagram, TikTok, and YouTube Shorts. It reports analyzing creative performance and using winning results to inform later variations.