Progressive Web App (PWA), in general, is a term used to denote web apps that use the latest web technologies. As such, this year's PWAs will be average web apps in a few years.
Specifically, though, Progressive Web Apps, also known as Installable Web Apps or Hybrid Web Apps, are regular web pages (or websites) but can appear to the user like traditional applications or (native) mobile applications. This new application type attempts to combine features offered by most modern browsers with the benefits of mobile experience. This specific use of the term is the subject of this article.
Progressive Web Apps combine the best of the web and the best of apps. They load quickly, even on flaky networks, can re-engage with users by sending web push notifications, have an icon on the home screen, and load as top-level, full screen experiences. In this fresh videocap from Google Developer Days, Europe 2017 Sam Dutton explains the what, why, and how of Progressive Web Apps, and works through code examples.
Learn more about PWA: