What kind of company is KDDI?

Written by Editorial Team | Last Updated: August 2026

KDDI Corporation is a major Japanese telecommunications and information technology services provider headquartered in Tokyo, Japan. Formed through historic corporate mergers uniting fixed-line, international, and mobile operators, the enterprise stands as one of Japan's leading telecommunications giants, delivering mobile cellular services under the au brand, high-speed fiber-to-the-home internet connections, digital television, and fixed-line telephony. Beyond traditional consumer connectivity, the corporation operates extensive enterprise data centers, cloud infrastructure solutions, and diversified digital ecosystem services encompassing financial settlement apps, electronic commerce, and energy supply operations across domestic and international markets.

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