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feat: initialize SCA reachability in the Lambda wrapper - #880
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This was referenced Oct 29, 2026
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## Description Enable SCA reachability in AWS Lambda. Requires the [Lambda startup change](DataDog/datadog-lambda-python#880); [system-tests coverage](DataDog/system-tests#8224) is separate. ## Testing 127 SCA tests, 12 regular/Lambda Flask telemetry cases, and five Lambda reachability checks pass on Colima. The Lambda reachability case fails with the old exclusion restored. Lint passes. ## Risks Lambda cold-start overhead is unmeasured. Co-authored-by: florentin.labelle <florentin.labelle@datadoghq.com>
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What does this PR do?
Initialize SCA before user handler imports when enabled, and retain its modules in packaged layers. Requires dd-trace-py#21366.
Testing Guidelines
All 40 wrapper tests pass. SCA has the same enabled-startup and import-failure coverage as other products. The five system tests pass across all five Lambda HTTP variants; packaging trim and formatting checks pass.