Hey Andrew

Your questions are sugar! So, the correct way would be Toe-Bee-Us - That's how it works in Germany.

Usually though, when I'm introducing myself in the United States I introduce myself as Toe-bye-us. Based on data I've gathered in A/B tests for many years, I can tell you that every time I introduce myself as "Toe-bye-us" chances are by 83% higher than usual that new connections will remember my name.

Therefore, even if "Toe-bye-us" is not the correct pronunciation, it clearly performs better in all aspects.