> What is Microsoft Expressive Pixels?
> Microsoft Expressive Pixels provides [...]. It empowers people to [...] Microsoft Expressive Pixels seeks to provide [...]
A whole paragraph to never answer the question it sets up...
In the end, it's an app: https://www.microsoft.com/store/r/9MTC56W1RXQH
PS: and a framework open sourced somewhere to deal with what is produced by the app