A company runs a serverless application using AWS Lambda and Amazon API Gateway. The application processes user uploads to an S3 bucket. The operations team uses CloudWatch Logs for monitoring, but they are finding it difficult to correlate logs across multiple Lambda functions that handle different parts of the workflow. The team wants to trace requests as they flow through the application and identify bottlenecks or errors. The team has already enabled CloudWatch Logs for all Lambda functions. What should the team do to achieve end-to-end request tracing?