Stockbroking platform Zerodha's billionaire Founder and CEO Nithin Kamath at The Product Summit said that he appreciates the humility of Infosys Co-founder NR Narayana Murthy and Wipro's Azim Premji, but he's a fan of Zoho Co-Founder and CEO Sridhar Vembu. "In the past year, I have been following Sridhar Vembu. I love everything he shares," said Kamath.