MFA vs SSO
MFA (Multi-Factor Authentication) and SSO (Single Sign-On) both come up in technology conversations and get confused. Here's the plain-English difference, side by side, so you can use each one with confidence.
The key difference: MFA refers to multi-factor authentication, while SSO refers to single sign-on — they describe different things even when they show up in the same sentence.
MFA — Multi-Factor Authentication
A login system that requires two or more verification methods — usually something you know (password) plus something you have (phone, token).
SSO — Single Sign-On
An authentication system that lets users log into multiple applications with one set of credentials, typically via an identity provider.
When to use MFA
Reach for "MFA" when the conversation is specifically about multi-factor authentication. A login system that requires two or more verification methods — usually something you know (password) plus something you have (phone, token).
When to use SSO
Reach for "SSO" when the conversation is specifically about single sign-on. An authentication system that lets users log into multiple applications with one set of credentials, typically via an identity provider.
FAQs
What is the difference between MFA and SSO?
MFA stands for Multi-Factor Authentication — A login system that requires two or more verification methods — usually something you know (password) plus something you have (phone, token). SSO stands for Single Sign-On — An authentication system that lets users log into multiple applications with one set of credentials, typically via an identity provider.
Are MFA and SSO the same thing?
No. They're often used in the same conversation because they're related, but they describe different concepts. MFA = Multi-Factor Authentication. SSO = Single Sign-On.
When should I use MFA vs SSO?
Use MFA when you're specifically referring to multi-factor authentication. Use SSO when the topic is single sign-on.