<ul><li>When handling complex authorization patterns, AWS Lambda and Cognito triggers can be used.</li><li>In a scenario of a maths contest application, endpoint-level authorization is crucial.</li><li>Challenges include endpoint protection, client-side determination of path parameters, and consistency in calls.</li><li>Key pre-requisites include setting up Cognito user pools, groups, and Lambda functions.</li><li>The solution involves Cognito groups, resource servers, and a pre-token generation trigger.</li><li>Lambda functions enrich tokens with checkpoint details for client-side use.</li><li>The Lambda authorizer confirms endpoint access based on token scopes and path parameters.</li><li>Considerations include scalability with Cognito groups or a separate database.</li><li>By leveraging Lambda triggers and authorizers, advanced authorization flows can be implemented.</li><li>The solution ensures supervisors access only assigned checkpoint tasks in the application.</li></ul>

Implementing advanced authorization with AWS Lambda for endpoint-specific access

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