Building Secure B2C Applications with Fine-Grained Access Control Using Amazon Cognito and Amazon Verified Permissions

Modern web applications require strong security controls to safeguard user information and resources, with authentication and authorization serving as two fundamental pillars of application security. This article demonstrates how to implement enterprise-grade controls using Amazon Cognito for identity verification and Amazon Verified Permissions with Cedar policies for access decisions, enabling role-based access control, resource ownership validation, and hierarchical permissions. The post provides practical examples and guidance for implementing these controls in Streamlit applications without requiring extensive custom security coding.