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AWS Certified Developer – Associate DVA-C02 · Domain 4: Troubleshooting and Optimization

AWS X-Ray: segments, subsegments, annotations vs metadata, sampling, active tracing, the X-Ray daemon/CloudWatch agent

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Last reviewed September 25, 2026 · Leer en español

Logs tell you what one component did; distributed tracing shows a whole request as it travels through API Gateway, Lambda, DynamoDB, SQS and external APIs. AWS X-Ray collects that trace data, draws a service map of your application, and lets you find which call made a request slow or failed.

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