What year did YouTube launch?

Before creating YouTube, Steve Chen, Chad Hurley, and Jawed Karim worked for which of the following companies?

https://www.wired.com/2011/04/youtube-live-streams/

(Please don't let this question age like milk.)

"It's Everyday Bro" - Jake Paul ft. Team 10

"Would You Fly to Paris for a Baguette?" - MrBeast

"Despacito" - Luis Fonsi ft. Daddy Yankee

Don't forget to like and subscribe...err, give ten stars and follow? Doesn't roll off the tongue as well.