Really, what is an 'app' on Windows? Microsoft's Universal App Model answers that question

[Windows Central]

It's surprising, but Windows has never had a definition of an app. "You know it when you see it, but it's never written down," said Andrew Clinick, Group Program Manager at Microsoft, during his session at Build 2016. Nothing was really defined, but there were a bunch of guidelines over the years. According to Microsoft, it's been very difficult to actually build an app model, and it hasn't been really enforced.

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