Architecture

Tower is a Bun + TypeScript control plane.

• Compute — app images boot as Firecracker microVMs via firecracker-ctr on the aws.firecracker runtime, one machine per app, each under a transient systemd unit.
• Data — a shared Postgres cluster with a dedicated database + role provisioned per app, pooled through PgBouncer.
• Edge — wildcard subdomain routing with per-host Let's Encrypt certificates issued on the fly, pointing https://<name>.your-host at the app's current machine.
• Console — a server-rendered admin for the owner/member dashboard, invites, databases, and AI provider config.