NTT DATA deployed OpenAI Codex internally and reached 10,000 active users within months, making it one of the largest internal AI communities at the company. Hiroaki Sato, Head of the AI Center of Excellence, is the source here, and he is not describing a pilot program.
The numbers are specific and worth your attention: a sales workflow that previously required 2 days of manual work, including customer list maintenance and report creation, now completes in 30 minutes. That is not an incremental improvement. Codex is also reaching non-technical teams, which reframes the tool from a developer asset into an operational one.
Read the full interview for Sato's breakdown of how the CoE structured adoption across both technical and non-technical staff. The methodology behind scaling to 10,000 users without fragmenting into shadow IT is the part most enterprise leaders will want to steal.
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