To demonstrate the new machine learning capabilities in its Azure cloud, Microsoft has set up a Web site that guesses the ages of people in uploaded photos.

The site, How Old Do I Look, is meant to show how easy it is for developers to use machine learning algorithms to make predictions and spot trends, said Joseph Sirosh, Microsoft corporate vice president in the company’s cloud and enterprise group.

The site, which he unveiled on Thursday at Microsoft’s Build 2015 developer conference in San Francisco, asks the user to upload a picture with someone’s face. After a minute or two, it will return a guess for how old the person in the photo is.

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