Do I need to support Azure AD and Okta from day one?

Not necessarily.

For most products, the right answer is usually:

• Start with one strong identity provider option that matches your early customers.
• Add Azure AD and Okta when a real customer need appears or when you’re clearly targeting enterprise buyers from the start.

A practical rule of thumb:

Support them from day one if:

• You’re selling enterprise software and your ICP already expects SSO.
• Your first design partners explicitly require Azure AD or Okta.
• You’re in a regulated/security-sensitive space where SSO is a dealbreaker.
• Your product is hard to retrofit for SAML/OIDC later.

Don’t support them from day one if:

• You’re still validating product-market fit.
• Your early users are SMB/self-serve.
• You want to avoid spending a lot of time on SSO edge cases before you’ve proven demand.

Best compromise

Design your auth architecture so you can add them later with low pain:

• Use OIDC as the default if possible.
• Keep auth/tenant mapping logic separate from business logic.
• Model users, orgs, roles, and external identity links cleanly.
• Leave room for SAML if enterprise is likely.

Common path

1. Ship email/password or a single social/OIDC login.
2. Add Google/Microsoft login if it helps adoption.
3. Add Azure AD/Okta SSO once you have enterprise traction.

If you tell me your target customers and sales motion, I can give a more specific recommendation.