A serverless application uses AWS Lambda. During sudden traffic spikes, users experience high latency because Lambda functions take time to initialize (cold starts). Which TWO features can be used to mitigate this issue? (Select TWO.)

Answer options:

Provisioned Concurrency

Reserved Concurrency

Keep-alive ping via EventBridge

Lambda Layers

Increase the function timeout.

How to approach this question

Identify methods to keep Lambda execution environments warm.

Full Answer

Provisioned Concurrency initializes a requested number of execution environments so that they are prepared to respond immediately. Alternatively, a common pattern is to use EventBridge to 'ping' the function every few minutes to keep it warm.

Common mistakes

Confusing Reserved Concurrency (limits) with Provisioned Concurrency (warm starts).

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