Do I need auth infrastructure for a small product?

Not always.

For a small product, you need some way to identify users and protect data, but that doesn’t necessarily mean building full-blown auth infrastructure yourself.

You probably need auth if:

• Users can see private data
• Users can change anything
• You need different roles/permissions
• You want accounts, billing, or saved preferences
• You need to prevent abuse or impersonation

You might not need much auth if:

• It’s a public demo or landing-page-only tool
• All content is read-only and not personalized
• You’re okay with a shared secret link or invite-only access
• The product is internal and behind another system

For a small product, best default:

Use a managed auth provider instead of building auth yourself:

• Clerk
• Auth0
• Supabase Auth
• Firebase Auth
• Cognito

That gives you:

• sign-in/sign-up
• password resets
• session handling
• social login
• security updates
• less maintenance

When to build your own auth

Usually only if you have a strong reason:

• very specific compliance needs
• unusual login flows
• deep existing identity system
• need full control over architecture

Simple rule of thumb

If the product has accounts, private data, or paid users, use auth.
If it’s just a small public tool, you may not need it yet.

If you want, I can help you decide based on your exact product idea and suggest the lightest possible auth setup.