Who is Auth0 best for?

Best use cases for Auth0

• Development teams building customer-facing applications (B2C or B2B SaaS) that need flexible, developer-configurable authentication flows — social login, passwordless, MFA, and custom authentication rules.
• Applications that need multi-tenant B2B authentication with per-organization SSO configuration, where enterprise customers can bring their own identity provider (SAML/OIDC) for their employees.
• Teams that want a battle-tested CIAM platform with extensive compliance certifications and audit documentation — useful when enterprise customers require vendor security questionnaires during sales cycles.

Who should avoid Auth0?

• You want only AWS-native primitives and minimal external dependencies
• You need ultra-low-cost auth at very high MAU scale without tier jumps
• You don’t want vendor-specific extensibility patterns
• Your auth needs are extremely simple and can be handled by Firebase
• You require full control over data residency and custom infra

Upgrade triggers for Auth0

• Growing MAUs and needing predictable cost controls
• Needing enterprise SSO features for customer procurement
• Needing SCIM provisioning and governance for larger tenants
• Needing advanced security policies (risk, anomaly detection, MFA at scale)
• Needing higher support/SLA as auth becomes mission-critical

Next steps