Security protects your SaaS from breaches, while compliance ensures you meet legal and enterprise requirements. This chapter explains advanced RBAC, zero-trust networking, compliance frameworks (SOC 2, GDPR, India DPDP), and AI-specific governance. Applied examples show how to evolve your Todo List SaaS from basic JWT auth to enterprise-ready zero-trust architecture with audit logs and compliance certifications.

1. Identity & Access Management (IAM)

Tools

• Auth0 / Keycloak / AWS Cognito → Authentication & RBAC.
• Okta / Azure AD → Enterprise SSO.
• OPA (Open Policy Agent) → Policy-as-code.

Best Practices

• Enforce RBAC (roles: Admin, Editor, Viewer).
• Use MFA for sensitive actions.
• Rotate API keys every 60–90 days.
• Implement least privilege access.

Real-Life Example

• GitHub Enterprise enforces SAML SSO + RBAC for org-level access.

Todo List SaaS Setup

• MVP: JWT auth with RBAC.
• Growth: Auth0 integration with MFA.
• Enterprise: Okta SSO + OPA for fine-grained policies.

2. Zero-Trust Networking