Improve your eCommerce with Progressive Web Apps

Can I improve my eCommerce with a Progressive Web App?

Currently the topic PWA (Progressive Web App – definition see box) is very much propagated especially within eCommerce.

Rightly so, or is this just a new buzzword to make a big fuss?

I would like to briefly explain here what a PWA is, what advantages it can have for eCommerce businesses and what you should pay attention to when approaching the topic.