The Bengaluru-based firm, founded in 2016, is now valued at more than $3 billion. Indian business-to-business (B2B) e-commerce startup Udaan has raised $280 million, it said Wednesday, as it seeks to serve more mom-and-pop businesses that are buying products online in the wake of the Covid-19 pandemic. Udaan said existing investors including Chinese tech giant Tencent, Lightspeed Venture Partners, DST Global, GGV Capital and Altimeter Capital participated in the fundraising, along with new investors — Octahedron Capital and Moonstone Capital. The Bengaluru-based firm, founded in 2016, is now valued at more than $3 billion, a person familiar with the matter said. A representative for Udaan declined to comment on its valuation.