Automate user-level custom permissions for Amazon Quick

Amazon Quick environments are growing rapidly, introducing new AI-powered features that expand user capabilities. To ensure the principle of least privilege, automating user-level custom permissions is essential. This allows fine-grained access control by enabling or disabling specific features for individual users.

There are four architectural patterns to automate custom permissions assignments at various stages of the user lifecycle:

1. Pre-registered users: For organizations that create users through custom portals or scripts, they can apply custom permissions during user creation using the RegisterUser API. This approach is direct and requires no additional automation.

2. Default account or role permissions: Two native APIs, UpdateAccountCustomPermission and UpdateRoleCustomPermission, can set default custom permission profiles at the account or role level. These settings apply to all existing and future users without requiring additional automation.

3. Event-driven custom logic: Amazon EventBridge and AWS Lambda can be used to dynamically apply custom permissions based on conditional logic. This is useful when native defaults are insufficient, such as when different permission profiles are needed based on group membership.

4. Retroactive batch updates: For users provisioned before automation was available, a Python script can be used to retroactively apply custom permissions to all users within specified Quick groups.

Scenario 1 focuses on pre-registered users, demonstrating how to apply custom permissions during user creation via the RegisterUser API with the --custom-permissions-name parameter. This approach is ideal for organizations that control the user creation process entirely through custom portals or scripts.

Scenario 2 covers default account or role permissions, explaining how to set profile defaults at the account or role level using the UpdateAccountCustomPermission and UpdateRoleCustomPermission APIs. This provides a solid foundation for security policies, especially for large enterprises or scenarios where per-user automation is impractical.

Scenario 3 explores event-driven custom logic using Amazon EventBridge and AWS Lambda. This pattern is necessary when more granular permission assignments are required, such as when users belong to different Quick or IAM Identity Center groups. By detecting group memberships and applying permissions dynamically, organizations can enforce fine-grained access control based on specific business needs.

Finally, Scenario 4 addresses retroactive batch updates for users provisioned before automation was implemented. A Python script can be used to apply custom permissions to all users within specified Quick groups, ensuring that legacy users receive the appropriate access controls.