It supplies free, production-grade vector map styles and tiles powered by OpenStreetMap data under a Community License. The service operates without API keys or sign-ups for public-facing projects, supported by an Enterprise tier for larger organizational needs.
It is ideal for public-facing web applications, open-source projects, or small businesses that need beautiful, functional maps quickly without incurring mapping API costs. It should not be used for internal tools, paywalled applications, or by organizations exceeding the revenue and employee thresholds without an Enterprise license.