The answer of course is: it depends.
Airlines change, routes vary and the even the layout of the cabin can play a part in whether or not you choose to book a ticket.
Some business class cabins allow you to sit next to someone else; in others it’s physically impossible.
Then there are all the different names: Business Class, First Class, Upper Suite, Club World.
That's why we've created this dedicated section on business class reviews. So that you can see what flying business class is really like before you book your ticket.