Final answer:
Azure AD Connect typically synchronizes on-premises AD changes with Azure AD automatically every 30 minutes to maintain up-to-date user information across environments.
Step-by-step explanation:
The frequency at which Azure AD Connect automatically synchronizes on-premises Active Directory (AD) changes to Azure AD is every 30 minutes. This synchronization helps to ensure that the user identities and credentials are up-to-date across both on-premises AD and cloud-based Azure AD environments.
The default and most commonly used synchronization frequency is set to facilitate regular updates without causing excessive load on the on-premises AD infrastructure.