[contextfree]

There are like three settings pages that use JavaScript and React Native, the vast majority of Settings is C++ and XAML/WinUI2

[kelvinjps10]

but that was already developed, all new development it's going with web based at microsoft

[domenicd]

Id be interested in a source for both this and the parent's comment. How do we know which settings pages use which tech? Have people been decompiling them?

[vitorgrs]

Pretty easy to know by just looking at app install folder, or, with Visual Studio, without any need to do any decompiling.

In practice, I guess most people realize because web tech just behaves different than native.