In a major decision made amid Bill and Melinda Gates’ divorce, Microsoft said on Thursday that Satya Nadella, the company’s chief executive officer, will take over as chairman, replacing John Thompson. Nadella was appointed CEO of Microsoft in 2014, and has been key in boosting the company’s operations, including acquisitions such as LinkedIn and ZeniMax. People are eager to learn everything they can about Nadella now that the world has taken notice of the Indian-born business chief.