Dmitry Zanozin, Founder and CEO of ZanoCloud, a technology consulting company, uses FusionAuth as the main user DB for managing authentication needs. He appreciates its simplicity in installation and configuration, self-hosted deployments, and seamless user migration from other systems. FusionAuth has saved his team hundreds to thousands of dollars in service costs and several weeks of work, providing a better user experience for their large-scale deployment with 9000 users. ZanoCloud uses OAuth, Single Sign-On, and JWT for Web, Mobile, and Desktop applications, taking advantage of its premium features for managing authentication needs.