Rakuten Fixes Issues Twice as Fast with Codex

OpenAI
OpenAIMar 11, 2026

Why It Matters

Accelerated development and halved recovery times give Rakuten a decisive edge in delivering innovative digital services while enhancing security, directly impacting revenue growth and customer satisfaction.

Key Takeaways

  • Codex cuts Rakuten product development cycles from months to weeks
  • Vulnerability checks now halve mean time to recovery using Codex
  • Rakuten plans to rely on specifications, not code writing
  • AI-driven coding empowers teams across e‑commerce, fintech, telecom
  • Faster releases aim to boost customer experience as entertainment

Summary

Rakuten, the Japanese global innovation firm, announced that it has integrated OpenAI’s Codex AI coding assistant across its e‑commerce, fintech and mobile‑communication divisions to accelerate software development.

The company says development cycles that previously required a quarter—from planning to production—are now compressed into weeks or a month. In its security operations, Codex‑assisted vulnerability checks have cut mean time to recovery by roughly 50 percent.

“We consider shopping as entertainment,” a Rakuten spokesperson noted, adding that the AI will shift engineers’ focus toward defining specifications and validating code quality rather than writing boilerplate. The firm highlighted that Codex’s growing intelligence is already generating positive momentum across teams.

If the trend continues, Rakuten can deliver new features faster, improve security posture, and strengthen its competitive position in fast‑moving digital markets, while freeing developers to concentrate on higher‑value tasks.

Original Description

Rakuten operates one of the world’s largest digital ecosystems across e-commerce, fintech, and mobile services. Shipping fast without sacrificing reliability is critical.
Teams use OpenAI Codex to support incident response, code review, and development workflows. The agent works inside monitoring systems and CI/CD pipelines to diagnose issues, review changes against internal standards, and advance projects from partial specifications.
The result is faster recovery and faster shipping. Rakuten reports up to a 50% reduction in mean time to recovery, and projects that once took a quarter can now ship in weeks.
As Codex handles more generation, engineers focus on clearer specifications and rigorous verification. The shift helps teams move quickly while keeping safety built into every release.

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