Box 1: verification -
Face verification: Check the likelihood that two faces belong to the same person and receive a confidence score.
Box 2: similarity -
Box 3: Grouping -
Box 4: identification -
Face detection: Detect one or more human faces along with attributes such as: age, emotion, pose, smile, and facial hair, including 27 landmarks for each face in the image.
Reference:
https://azure.microsoft.com/en-us/services/cognitive-services/face/#features