Matthew Reschke, CIO at Sunfinity Renewable Energy, shares his experience with FusionAuth as their primary authentication platform. He and his team integrated FusionAuth into their existing infrastructure, replacing their custom authentication system. They chose self-hosting for cost control, privacy, and flexibility. FusionAuth acts as an identity provider for various 3rd party applications, including Google GSuite, OSTicket, SnipeIT, ERPNext, SuiteCRM, Nextcloud, GitLab, and others. The team uses OAuth2, OIDC, SAML, and Kong to manage authentication and API access. They have implemented granular permission strings to control app-specific details. FusionAuth has saved them time and money by providing a simple and intuitive solution for their authentication needs.