Amazon has invested in Smallcase Technologies, a Bangalore startup that is making it very easy for people to invest in baskets of stocks and exchange traded funds, which it calls, well, smallcases. Amazon has joined a $40 million investment in Smallcase led by Faering Capital and Premji Invest, IT billionaire Azim Premji’s family office. And today’s conversation is a hark back to chat with Abhinav Asthana, whose company Postman has just become one of the most valued SaaS startups to be led by Indian founders anywhere