Image comprehension used to be a dark art and required a team of onsite data scientists. In recent years, however, we've come closer to solving problems such as image and facial classification/categorization, facial comparisons, facial landmark identification, and facial recognition. Cloud-based image comprehension provides access to machine-learning capabilities through services such as Amazon Rekognition, Microsoft Computer Vision API and Google Cloud Vision API which can supplement AR applications and anything involving photo tagging and classification.