AWS Certified Developer – Associate — Question 326

A developer is working on a serverless project. Initial testing shows that a cold start takes about 8 seconds on average for AWS Lambda functions.

Which actions should the developer take to reduce the cold start time? (Choose two.)

Answer options

• A. Add a dependency injection framework to the project.
• B. Reduce the deployment package by including only the needed modules.
• C. Configure provisioned concurrency for the Lambda functions.
• D. Increase the timeout setting for the Lambda functions.
• E. Change the Lambda invocation mode from synchronous to asynchronous.

Correct answer: B, C

Explanation

Reducing the deployment package size minimizes the time AWS Lambda takes to download and unpack the code during initialization. Configuring provisioned concurrency ensures that execution environments are pre-warmed and ready to respond immediately, effectively eliminating cold starts. Other options, like increasing the timeout or changing invocation modes, do not address the root causes of initialization latency.