Every application needs customer authentication, but building it demands specialized expertise. FusionAuth solves the problem of building essential user security without distracting from the primary application. FusionAuth is the authentication and authorization platform built for developers, by developers. It puts developers in the driver’s seat, with control, flexibility and developer ergonomics. For technical leaders creating products for external users, FusionAuth tames the risk and complexity that comes with typical identity systems. With self-hosted or cloud options, extensive documentation, a free plan, and a no-hassle process, FusionAuth helps developers meet authentication feature and compliance requirements so they can focus on building their application.