Multiple realms manage with HA


I am just rolling out my IoT service for monitoring of some industrial electric panels. I had built my own too basic web app to display the collected info and a history of events from each monitored panel. However it be better to me use a most professional web app like Home Assistant, but a need to manage different realms, one for each “customer” and I want to know if Home Assistant has authentication and authorization system to split users for each individual realm?

Best regards.