How will Heroku enforce MFA for users?
Heroku users already have the ability to enable MFA for their accounts.
Starting August 2021, Heroku Enterprise Account administrators have the option to require MFA for all their account members. Users that are members of any account that has enabled this option will need to enable MFA on their next login to Heroku.
Sometime after February 2022, Heroku will begin automatically requiring MFA for all users when logging in to Heroku. Auto-enforcement dates will vary by your account type and usage pattern. As with any other major feature update, Heroku provides advance notice and guidance.