Manual fulfillment doesn't scale, per-sale platform fees eat your margin, and public download links get pirated within hours. Delivery Server Kit is a self-hosted Docker Compose system that gives every order an expiring secure download link, a unique per-order license key, and a hard download-count limit — deployed on your own VPS in under an hour. Includes an admin dashboard to manage orders and revoke access, webhook templates to connect your checkout, and a full setup guide with screenshots.