A company has hosted its solutions on the Azure Cloud. They need to implement MFA for identities hosted in Azure. Is it necessary to deploy a federation solution for identities available in the cloud?

Answer options:

A.Yes
B.No

Answer – B 
There are various ways to implement MFA on Azure, like using Conditional Access policies. In Azure AD, you can also manage MFA settings, as shown below. 

For more information on how to configure MFA settings, please visit the below URL- 

https://docs.microsoft.com/en-us/azure/active-directory/authentication/howto-mfa-getstarted
https://docs.microsoft.com/en-us/azure/active-directory/authentication/tutorial-enable-azure-mfa