Azure AD account vs On-premise AD account
Account in Active Directory (AD) and account in Azure AD (AAD) Here AD is being referred to as the on-premise AD and Azure AD (AAD) is the cloud based Active Directory. Here are two scenarios of user accounts. The AAD user accounts are called as M365 accounts that are required to access MS services in the cloud, like M365 tenants, Exchange online mailboxes etc. Scenario: You only have Azure AD account, and an Exchange online mailbox. In this scenario how are the credentials synced. There is no syncing. Azure AD account acts as the single identity source for accessing both Azure AD and Exchange Online. The Azure AD account is the authoritative source for your identity and credentials. When you are assigned an Exchange Online mailbox, it is linked to your existing Azure AD account. Your Azure AD credentials (username, password) are used to authenticate and access both Azure AD and your Exchange Online mailbox. There is no synchronization of credentials happening because the Azure AD