Verifiers SHOULD NOT impose other composition rules (e.g., requiring mixtures of different character types or prohibiting consecutively repeated characters) for memorized secrets. Verifiers SHOULD NOT require memorized secrets to be changed arbitrarily (e.g., periodically). However, verifiers SHALL force a change if there is evidence of compromise of the authenticator.
I’ve successfully used it to tell auditors to fuck off about password rotation in the healthcare space.
Now, to be in compliance with NIST guidelines, you do also need to require MFA. This document is what federal guidelines are based on, which is why you’re starting to see Federal gov websites require MFA for access.
Either way, I’d highly encourage everyone to give the full document a read through. Not enough people are aware of it and this revision was shockingly reasonable when it came out a year or two ago.