Scenario Recap: * IoT data from 100 machines × 50 sensors × 1-minute intervals for 1 year = 5,000 time series datasets. * Requirement: Detect unusual values (outliers) to predict failures. Correct Service: * Azure Anomaly Detector (A) is designed for time-series anomaly detection. * It learns temporal patterns and detects anomalies in sensor/IoT data streams. * Other options: * Cognitive Search = full-text search * Form Recognizer = extract text/fields from documents * Custom Vision = image classification The answer: A. Anomaly Detector Reference: Anomaly Detector overview