There is something that I've never managed to put my finger on: most companies as huge as Google / Apple / FB etc... or even more traditional ones (banks, oil, etc ...) are sort of "well known" in the sense that they do PR, they have well known figureheads, etc ...

VISA has always struck me as a very nebulous entity, whose structure, governance, is not very well know by the general public.

I wonder how they managed to grow so large while managing to keep such a conspicuously low profile.

edit: and to answer my own question, the wikipedia page is quite informative : https://en.wikipedia.org/wiki/Visa_Inc.