I use the regularly, whether it's with start-ups or multi-billion dollar companies. This is your absolute basic foundation stuff in UX, but it's only one part

I use the regularly, whether it's with start-ups or multi-billion dollar companies. This is your absolute basic foundation stuff in UX, but it's only one part of it. This (persona modelling) is the sort of stuff that you do when refining processes based on how various demographic targets will go through them. It's essential stuff to know. So, pay attention!