Supabase is an open-source Postgres development platform that bundles a full backend stack into one product: a managed PostgreSQL database, authentication, file storage, edge functions, realtime subscriptions, and vector search — all wired together and accessible via auto-generated REST/GraphQL APIs, SDKs, or direct Postgres connections. Developers get a generous free tier, then pay a tiered SaaS subscription scaled by database size, bandwidth, and monthly active users. The platform targets everyone from solo builders to large enterprises like PwC, McDonald's, and GitHub Next. It positioned itself as the open-source, SQL-first alternative to Google's Firebase, and has since become the default backend for the AI-coding wave: tools like Lovable, Bolt, and Claude Code now provision the majority of new Supabase databases. With 7M+ developers and 250,000+ customers, Supabase is betting that Postgres — the world's dominant open-source relational database — is the right foundation for the next generation of AI-native applications.