A successful Customer Identity and Access Management (CIAM) program includes key features such as self-service registration and account management, single sign-on (SSO), multi-factor authentication (MFA), a centralized customer directory, and developer tools like APIs and SDKs for seamless integration. Essential components also involve advanced frictionless security, strong privacy management, API integration, data access control, compliance adherence, customer analytics, scalability, and an enhanced overall customer experience to ensure secure, seamless, and personalized interactions.