CISA's page on multifactor authentication tells people they may find the setting listed as "Two Factor Authentication," "Multifactor Authentication," or "Two Step Factor Authentication" (CISA). The same page lists "2-Step Verification" and "2FA" under the heading "Different ways to say MFA", so the mfa vs 2fa wording matters less to a buyer than how people log in to your product and how hard that login is to get past.

What counts as a factor

NIST's glossary defines multi-factor authentication as "authentication using two or more different factors to achieve authentication", and lists the factors as something you know (a PIN or password), something you have (a device or token) and something you are (a biometric) (NIST CSRC glossary). Two-factor authentication is the case where there are exactly two. So every 2FA setup is MFA.

The word that matters is "different". A password plus a security question is two things you know, so it's one factor used twice. If your product's second step is something like that, don't call it MFA on a call.

Who controls the second factor

Once the naming is out of the way, the useful answer covers what your product supports for that second factor and who controls it. The enforcement questions are whether the buyer's admin can require MFA for all their users or leave it to each person, and whether it applies to your own staff's admin access too.

If the buyer uses single sign-on, the answer changes shape. Their users would sign in through the company identity provider, and the MFA happens there, under the buyer's own policies. A security team may prefer that, since they already manage it. We've written about how SSO changes the login answer.

Not all second factors are equal

CISA says plainly that "not all MFA methods gives you the same level of protection" and calls phishing-resistant MFA "the standard all industry leaders should strive for", naming FIDO/WebAuthn as "the only widely available phishing-resistant authentication". It also points to number matching for push-based apps as a fallback, to block what it calls "mobile push bombardment".

NIST's SP 800-63B goes further on text messages. It classes out-of-band authentication over the phone network (SMS or voice) as a restricted authenticator, and it says email "SHALL NOT" be used for out-of-band authentication at all (NIST SP 800-63B). Restricted doesn't mean banned, but it's the kind of detail a security reviewer may raise if your product's only second factor is a code by text.

"We support authenticator apps and security keys, and admins can enforce MFA for the whole workspace" says far more than "yes, we have 2FA". Get the list of supported methods from your product team and name each one in your answer.

If your product keeps a record of sign-in events, check whether each event shows the authentication method; that's how an admin proves the policy works.

Practising the explanation

Authentication and permissions are part of VoiceVocab's "Cloud & security" course, where you answer buyer questions out loud and get written feedback on accuracy, clarity and relevance to the buyer. The free "APIs & integrations" lesson is a quick way to try the format.

If you're asked mid-call and don't know which methods your product supports, say which ones you'll confirm and send the list in writing. Get the enforcement answer right as well. If MFA can only be switched on per user, tell the admin now; their policy may require workspace-wide enforcement.