PWA is the abbreviation for a progressive web app, that is to say an application-type environment accessible from a mobile browser without going through an application store.
In other words, it's a mobile-optimized way of displaying your website, with all the constraints that mobile needs for a good user experience: fluidity, speed and design adapted to the format of the smartphone.
The PWA then allows you to display a website on mobile as if it were a mobile application, with the difference that This app is NOT available on the app market to download (App Store and Play Store for example).
What is the future of progressive web apps? For the moment, professionals in the sector remain mixed about them, and are observing with interest the evolution of practices, between the hegemony of app stores and total openness without an intermediary app download market.