Japan Telegraph and Telephone Public Corporation, a predecessor of NTT, started Data Communications business in 1967.

[4] After the acquisition of Keane Inc., NTT DATA became the 8th largest software company in the world, with the annual revenue of $14 billion.

[citation needed] In 2010, NTT DATA acquired Intelligroup Inc., a US-based IT consulting and service providing company.

After taking over Intelligroup, NTT DATA became the ninth largest software company in the world, worth over $11 billion.

[citation needed] in March 2022, NTT Data announced it had acquired the Detroit-based digital transformation and innovation company, Vectorform.

Outside Japan, NTT DATA has its wholly owned subsidiaries or offices in the UK, China, Malaysia, Thailand, India, the US, Italy, Australia, Romania, Singapore, Vietnam and other countries or regions.

[17] Sponsored software: Ticketing System NTT DATA was ranked #8 in Consulting Magazine's 2016 Best Firms to Work For.