Swiggy's quick commerce business Instamart's Head Karthik Gurumurthy is stepping aside and the startup's Co-founder Phani Kishan Addepalli will take over the business, the former wrote in a LinkedIn post on Friday. "I plan to take a sabbatical now to come back afresh and build something," Gurumurthy said. He further mentioned that Instamart was "almost a billion dollar business".