Facebook is targeting a bigger piece of the pie, India's fast-growing e-commerce market, after WhatsApp, the messaging app, entered India's payments industry. In India's e-commerce market, retail giants amazon and wal-mart are also preparing to face off. Facebook is in talks with some Indian companies about joining the Facebook Marketplace, according to people familiar with the matter. Facebook will begin testing the B2C model on the Marketplace platform this month and will conduct a small test in June. In addition, people familiar with the matter said that Facebook would launch more tools at Marketplace for companies to upload products, manage inventory and orders, and add a variety of payment options by the end of the year.