A cloud-based identity and access management service for securing user authentication and resource access
Found a related question here-kindly take a look https://learn.microsoft.com/en-us/answers/questions/1162123/password-hash-synchronization-heartbeat-was-skippe
This documentation should help guide you- https://learn.microsoft.com/en-us/entra/identity/hybrid/connect/tshoot-connect-password-hash-synchronization#no-passwords-are-synchronized-manual-troubleshooting-steps