FusionAuth's recent load test demonstrated its impressive scalability by successfully registering 100 million users without any significant performance degradation, achieving a rate of about 400 new user registrations per second. Using a nearly decade-old system with basic hardware, the test results indicate that FusionAuth can handle massive user influxes, such as the entire under-18 population in the United States or the total user base of a popular game like Call of Duty, within a short timeframe. This performance assures potential clients that FusionAuth can support high-volume applications without encountering field issues, making it a robust Customer Identity and Access Management solution that offers flexible and secure features like registration, login, SSO, and MFA, free for unlimited users.