How Satya Nadella created a 'learn-it-all' culture at Microsoft to help it become a $3 trillion powerhouse

• Satya Nadella transformed Microsoft by focusing on cloud computing and open-source software.
• Nadella also envisioned shifting Microsoft's culture from "know-it-alls" to "learn-it-alls."
• Here's how Microsoft's big bets on AI have helped boost its market value to more than $3 million.

When Satya Nadella took over as CEO of Microsoft in 2014, he was on a mission to transform the company's culture.

A few months into the role as its CEO, the former engineer laid out his vision in a memo to staff.