Turnitin showcases an event-driven architecture for detecting AI-generated writing in academic papers using AWS services. The system processes up to 2 million papers daily, utilizing SNS, SQS, Lambda functions, SageMaker for inference, and DynamoDB for data storage. This scalable solution allows Turnitin to analyze papers for AI content, providing scores at both the sentence and document level. The architecture enables rapid deployment across multiple geographic regions, supporting Turnitin's mission to uphold academic integrity in the face of emerging AI writing tools.