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AWS Certified Solutions Architect study material · question 409 of 500

Which two phases does Lambda use to serve a request? Choose two.

  1. The Invoke phase, which runs the handler
  2. The Warm phase, which pre-loads dependencies
  3. The Drain phase, which flushes logs
  4. The Init phase, which builds the execution environment
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Answer: D. The Init phase, which builds the execution environment
A. The Invoke phase, which runs the handler

Lambda initializes an execution environment and then invokes the function; code outside the handler runs during Init.

Source: Understanding Lambda function scaling (Amazon Web Services) — Understanding and visualizing concurrency

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