Turso is an edge database company founded 2022 (formerly ChiselStrike), based on proprietary libSQL (SQLite fork with server-side features). Core innovation: SQLite as local embedded DB typically can't "sync across nodes"; Turso adds server-side + conflict-free sync protocol, turning SQLite into globally distributed DB. Choosing SQLite over Postgres/MySQL because: (1) SQLite files are small (one file per DB), deploying to 30+ regions is cheap; (2) Extremely low read/write latency (SQLite reads file directly, no query planner like Postgres); (3) Embedded replicas — your app process embeds a local SQLite, zero-latency reads. Best for: global user web apps (users in every region need local-speed DB), edge function apps (Cloudflare Workers + Turso), mobile offline-first apps. Representative of new-generation edge-era databases.