When you first launch a Lambda function, everything feels magical. You upload code as a zip or point to a container image, and someone else automatically spins it up and scales it. But the moment traffic suddenly surges 10x in production, questions emerge: "Why did my response time jump from 50ms yesterday to 5 seconds today?" The answer is almost always one of three things: concurrency limits, cold starts, or VPC ENI exhaustion.
In the SAP-C02 exam, Lambda is the centerpiece of the serverless domain. Simple "event → function execution" problems rarely appear