1 week ago -The resource requires the user to supply the identity by which the user is known to the resource, along with evidence of the authenticity of the user's claim to that identity. Simple authentication requires only one such piece of evidence (factor), typically a password, or occasionally multiple pieces of evidence all of the same type, as with a credit card number and a card verification code (CVC).
MFA is a layered approach to securing data and applications where a system requires a user to present a combination of two or more credentials to verify a user’s identity for login. MFA increases security because even if one credential becomes compromised, unauthorized users will be unable to meet the second authentication requirement and will not be able to access the targeted physical space, computing device, network, or database.

February 18, 2025 -A low-code CIAM platform for managing customer identity as you scale. ... Multi Factor Authentication (MFA) is a security system that requires more than one method of authentication from independent categories of credentials to verify the user’s identity for a login or other transaction.

January 8, 2026 -The risk-based authentication where security levels scale to the action of the user. Hundreds of clouds, on-premises, and custom internal applications are supported. ... Compliant-Ready security that is strong. ... Okta Adaptive MFA solution that is offered in the cloud and is aimed at protecting access to the workforce and customers on a large scale.

As we can see from the illustration, Large Scale Multi Factor Authentication has many fascinating aspects to explore.