Microsoft

Microsoft Corporation is an American multinational technology company. It develops, manufactures, licenses, supports, and sells computer software, consumer electronics, personal computers, and related services.

Alphabet Inc

Alphabet Inc. is an American multinational conglomerate headquartered in Mountain View, California. It was created through a corporate restructuring of Google on October 2, 2015.

Facebook, Inc.

Facebook, Inc. is an American social media and technology company based in Menlo Park, California. Facebook is popular global social networking website.

IBM

IBM is an American multinational information technology company headquartered in Armonk, New York, IBM produces and sells computer hardware, middleware and software, and provides hosting and consulting services in areas ranging from mainframe computers.

Tencent

Tencent Holdings Limited is a Chinese multinational conglomerate holding company founded in 1998, whose subsidiaries specialise in various Internet-related services and products, entertainment, artificial intelligence and technology both in China and globally.