Have you worked with AWS Lambda? If so, what did you create?

S: In my last role, we needed to process real‑time sensor data from IoT devices. T: I was tasked with building a serverless pipeline to ingest, transform, and store the data. A: I designed a Lambda function triggered by an AWS IoT rule that received MQTT messages, parsed the JSON payload, performed validation, and wrote the cleaned data to DynamoDB. I also added CloudWatch metrics and alarms for failure rates. R: The solution reduced infrastructure costs by 70%, scaled automatically to handle spikes, and cut data processing latency from 5 seconds to under 1 second.