Help me evaluate auth providers for a product that needs SSO, MFA, and Google login without a lot of custom code?

If you want SSO + MFA + Google login with minimal custom code, you’re basically looking for a provider that gives you:

• OAuth/OIDC social login (Google)
• Enterprise SSO (SAML and/or OIDC)
• Built-in MFA (TOTP, SMS, email, WebAuthn/passkeys if possible)
• Good SDKs / hosted UI so you don’t have to build auth flows yourself

Shortlist by “least custom code”

Best “plug in and go”

1. Auth0

   • Strong support for Google login, SSO, MFA
   • Mature docs, lots of SDKs, good hosted login pages
   • Great if you want to move fast and don’t mind paying more as you scale

2. Okta Customer Identity / Okta CIC

   • Similar to Auth0, since Auth0 is owned by Okta
   • Strong enterprise SSO and MFA
   • Good choice if enterprise customers are a priority

3. Clerk

   • Very easy developer experience
   • Google login + MFA support
   • Enterprise SSO available on higher tiers
   • Great if you’re building a modern web app and want less auth plumbing

4. WorkOS

   • Best if your main need is enterprise SSO
   • Pairs well with your own auth or another identity layer
   • Google login isn’t the main focus, but can be part of the stack depending on your setup
   • Good for B2B SaaS

5. Firebase Auth / Google Identity Platform

   • Very easy for Google login
   • MFA and enterprise SSO are more limited / less straightforward than the enterprise-first tools
   • Good for consumer-ish apps, less ideal if SSO is core

What matters most

If your product is B2B and SSO is important

Pick one of:

• Auth0
• Okta CIC
• WorkOS + another auth layer
• Clerk if you want simpler implementation and your SSO needs are not super complex

If you want the fastest dev experience

• Clerk or Auth0

If you expect a lot of enterprise customers

• Okta CIC or Auth0
• WorkOS if you want a more focused enterprise SSO layer

Quick comparison

Provider	Google Login	MFA	Enterprise SSO	Custom Code Needed	Notes
Auth0	Yes	Yes	Yes	Low	Very full-featured, higher cost
Okta CIC	Yes	Yes	Yes	Low	Strong enterprise fit
Clerk	Yes	Yes	Yes	Very low	Great DX, check pricing/SSO depth
WorkOS	Yes/Indirect	Depends on stack	Yes	Low-medium	Best for B2B SSO, not a full auth platform by itself
Firebase Auth	Yes	Limited/varies	Limited	Low	Great for Google login, weaker for enterprise SSO
AWS Cognito	Yes	Yes	Yes	Medium-high	Powerful but more setup and rougher DX

My practical recommendation

• B2B SaaS with enterprise customers: Auth0 or Okta CIC
• Modern app, want easiest implementation: Clerk
• Need enterprise SSO first, auth second: WorkOS
• Need cheap/simple Google login first: Firebase Auth

Questions to narrow it down

If you answer these, I can recommend the best option more precisely:

1. Is your app B2B, B2C, or both?
2. Do you need SAML SSO, OIDC SSO, or both?
3. Do you need MFA for all users or only admins/enterprise users?
4. What stack are you using: React, Next.js, mobile, backend language?
5. Is cost a major concern, or is speed of implementation the priority?

If you want, I can also give you a ranked recommendation for your exact stack or a decision matrix with pricing and implementation effort.