"There are tons of metrics out there. Clicks. Percentage of new sales. Subscription revenue. But not all of them are KPIs. KPIs are the most important metrics you have – the ones that really underscore what your key business goals are."
There are so many web shops on the Internet showing products which doesn’t have more information than a name and a price (and maybe a photo). Would you buy a product in a nearby store if you can’t see it or touch it?