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Amazon CloudWatch now supports API keys for OpenTelemetry traces

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Amazon CloudWatch now supports bearer token authentication using API keys for sending OpenTelemetry traces to the AWS X-Ray OTLP endpoint.

  • OTLP/HTTP clients can authenticate with bearer tokens instead of AWS Signature Version 4 (SigV4)
  • Enables traces from on-premises workloads, other clouds, CI/CD pipelines, and third-party tools
  • SigV4 remains the recommended method; ADOT SDKs continue using SigV4 by default
  • Both authentication methods provide same CloudWatch capabilities including Transaction Search and Application Signals
  • Available in all commercial AWS Regions with AWS X-Ray OTLP traces endpoint

Bearer token authentication expands OpenTelemetry trace integration options for teams unable to use AWS SDK or short-term credentials.

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