Progressive Web Apps (PWAs) take advantage of major advances in
modern web browsers, web APIs, and front-end frameworks to deliver
great app experiences to mobile and desktop users. Big brands like
Twitter and Pinterest are demonstrating how PWAs can boost user
acquisition, engagement, and ultimately, revenue.
I would like to share with you this ionic white paper "The Architect's guide to PWAs"
https://cdn2.hubspot.net/hubfs/3776657/PWA_WP_v6.pdf