Final answer:
The statement is False. Implementing Azure Multi-Factor Authentication (MFA) does not require a federation solution or syncing on-premises identities to the cloud; it can be enabled directly for cloud users or for synced users in different ways.
Step-by-step explanation:
The statement is False. You can implement Azure Multi-Factor Authentication (MFA) without the necessity of deploying a federation solution or syncing on-premises identities to the cloud. Azure MFA can be enabled through various means, including directly in the cloud for cloud-only users, or for synced users, with or without federation. For instance, you can use Password Hash Synchronization or Pass-Through Authentication in combination with Azure AD Connect to enable MFA for on-premises identities. Additionally, Azure AD offers Conditional Access policies which can require MFA under specific conditions.