From Sheryl Sandberg to Ted Sarandos, here are the high-powered executives who are 2nd-in-command to some of the biggest CEOs in tech

· Many CEOs at the world's most valuable tech companies rely on No. 2 executives to help them get the job done. 
· Some of these execs may go on to run the company one day, while others may leave for big opportunities somewhere else. 
· For example, top executives like Sheryl Sandberg and Ted Sarandos are second-in-command...