Is Progressive Web Apps accessible only from mobile, how to deploy

Hey guys,

Have you ever heard about Progressive Web Apps? I just hear about it today and I scoured every web corner to understand what it is. The information is so scant.

All I know is it's standalone app on the web and accessible via mobile.

The example of this feature is https://www.washingtonpost.com/pwa/

It cannot be accessed via desktop. Data on the web seems to fetch instantly once you tap on the link.

Do you have any idea how to they deployed it.

Thanks,