Simplified, PWAs are mobile apps accessible via the web.
They provide an app-like experience on your browser.
It feels like a native app (Android, iOS) due to the use of an app-shell that provides app-style navigations and gestures. The same app-like experience is essentially being delivered through a URL, allowing you to click on it and instantly have access to the app. The functions, benefits and value of the app is entirely the same, it is simply delivered in a frictionless way.
Since progressive apps are built on the web, they are not tied to specific devices. A PWA displays seamlessly and identically on all devices, including desktop, mobile, tablet, or whatever comes next.
Progressive web apps combine everything that is great about a native mobile app with everything that is great about a mobile website...