In yet another high-profile exit at WhatsApp, its Indian-origin Chief Business Officer Neeraj Arora has quit, saying he needs “time off to recharge and spend time with family”. Arora has been with WhatsApp since 2011 — well before the mobile messaging service’s $19 billion acquisition by Facebook. An alumnus of the Indian School of Business (ISB), Arora played a key role in closing the acquisition of WhatsApp.