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JOHANNESBURG—European technology giant Prosus NV said it struck a $4.7 billion deal—its largest-ever acquisition—to buy Indian payments platform BillDesk, the latest investor bet that more and more consumers will conduct…

Hootsuite Inc., a social-media marketing platform, said it is acquiring Heyday Technologies Inc., an artificial-intelligence company that offers chatbots, for $48 million. Heyday offers customer service…

NEW DELHI—The company behind Indian mobile-payment app Paytm plans to raise up to $2.2 billion through one of India’s largest-ever initial public offerings, capitalizing on a boom in the country’s stock market.As part of the share sale by…

A new venture fund has launched to invest in startups commercializing metamaterials, a budding area of materials science that could improve the performance and reduce the size and weight of devices such as lenses and sensors.…