I didn’t know MFA until I purchased JetBrain’s IDE. They use Two-factor Authentication. In our country, we don’t use that system. We use SMS to send a message to your phone and ask you to fill the code to the website instead of to input to the specified APP or interfaces.

I’m just speaking from the experience for the MFA.

1. You may search for the third-party components.
2. Ask your provider to offer you documents or SDK, at least you should fetch an API of HTTP(s).

In China, we often use mini-programs of WeChat or other big APPs like Tik-Tok. You don’t have to download, just search and use them. They are all implemented with Vue.js.

And in many situations, we use OAuth to login with third-party accounts on the famous APP like Wechat, QQ, Tik-Tok etcs.

Cf offers no direct mfa function. Instead, other providers do and you can integrate with them. And you could do that via api calls (such as simply using cfhttp), or via oauth (using cfoauth or cfhttp, etc.), or via SSO (single sign on) such as by way of saml using support for that added in cf2021.

None is simply “mfa for cf”, and some will be free while others will incur cost (perhaps depending on volume). Most things you may integrate with will not mention cf, but the concepts and integration points are generic.

I suspect you’ll next want to be pointed to actual code or a live example. Once you clarify a bit more I can do that, or perhaps others will without any further ado.