Progressive web apps make a website feel like a native app. For a business stakeholder, this gives them the opportunity to use a free app store to engage customers. For real users, it means that the sites they routinely visit can be installed without any friction. Either way, it is a marketing opportunity to increase engagement by delivering a better user experience and an natural way to place their brand's icon in the customer's most important location: their homescreen.
Each platform (operating system and browser) implements a homescreen and how the application is launched in their own way, but most involve some sort of bookmarking process and opening experience driven by the web manifest file.
Chrome for Android places installed PWAs in the application shelf and allows PWAs to be managed like a native app in the...