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Which AWS service runs developer code in response to events without provisioning or managing servers, billing per-millisecond of execution?
AAWS Lambda
BAWS Outposts in the customer's office
CAmazon Redshift dense compute nodes
DAmazon EC2 with Reserved Instances
Answer & Solution
Correct answer: A. AWS Lambda
Lambda is the canonical serverless function service in AWS — upload code, attach a trigger, AWS handles concurrency / OS / patching / scaling. The other options are always-on or off-cloud compute.
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