On June 6, Arora will replace Mark McLaughlin, who is transitioning to the role of vice chairman of the Board after serving as CEO since 2011.
Arora served as president and chief operating officer at SoftBank from 2014 until 2016, when he stepped down amid criticism from shareholders over his investments.
Before that, he served as chief business officer at Google. There, as Palo Alto noted, he was "instrumental in growing Google's search business from $2 billion in revenues to over $60 billion in revenues."
The cybersecurity firm stressed Arora's experience in scaling technology businesses and running large organizations.
"Over the course of several quarters, I have been discussing succession planning with the Board and I couldn't be more pleased that we have found a leader in Nikesh who is ideally suited to take the company on the next leg of its journey," McLaughlin said in a statement.