You are working on designing an AI solution to perform analysis on time-series data in batches and prevent fraud detection by identifying deviations from the normal behavior. 
Which cognitive service would you use?

Answer options:

A.Personalizer
B.Text Analytics
C.Anomaly detector
D.Ink Recognizer

Correct Answer: C
Option A is INCORRECT. Personalizer is not a tool for anomaly detection, as required in this scenario. The personalizer helps the application learn from real-time behavior and present the best experience to customers.
Option B is INCORRECT. Text Analytics performs majorly below natural language functions over raw text.
-sentiment analysis 
-key-phrase extraction 
-named entity recognition, and 
-language detection. Option C is CORRECT. Anomaly Detector helps in monitoring time-series data and anomaly detection with machine learning.
Option D is INCORRECT. Ink Recognizer is a service that is set to retire. Ink Recognizer helps with certain activities related to digital ink recognition.
References: 

https://docs.microsoft.com/en-us/azure/cognitive-services/personalizer/
https://docs.microsoft.com/en-us/azure/cognitive-services/text-analytics/
https://docs.microsoft.com/en-us/azure/cognitive-services/anomaly-detector/overview
https://docs.microsoft.com/en-us/azure/cognitive-services/ink-recognizer/