PWA: Progressive Web All-the-Things

PWA. Progressive Web Apps. Frances Berriman and Alex Russell coined the term “progressive web apps" in 2015 with what I think is a seminal post, "Progressive Web Apps: Escaping Tabs Without Losing Our Soul."
Three years later, we’ve come a long way. From a loose collection of technologies – Service Worker, Manifest, Add to Homescreen, Web Push – that were originally only implemented in one browser engine, to a brand that has started to stick across the industry with businesses and developers, and all of the major browser vendors implementing the majority of the ‘PWA’ stack.