Answer: Amazon Rekognition

## Explanation **Amazon Rekognition** is the correct answer because it is AWS's service for image and video analysis using machine learning. It can: - **Detect and recognize faces** in images and videos - **Analyze video streams** in real-time - **Identify people** based on facial recognition - **Track individuals** across multiple frames This makes it perfect for automated video analysis to identify employees accessing offices. **Why the other options are incorrect:** - **Amazon Polly**: A text-to-speech service for converting text into lifelike speech - **Amazon Cognito**: A user authentication and identity management service - **AWS Lambda**: A serverless compute service for running code without provisioning servers These services don't provide video analysis capabilities required for identifying people in video footage.

Author: Ritesh Yadav