zero oneホールディングス adopts DAIJOBU's Claude Code法人研修

zero one Holdings was set up in July 2026, grouping four companies around the Fukushima construction firm zero one, which was founded in 2014 and employs just under 50 people. Its president had concluded since generative AI appeared that no industry could survive without mastering it, but with four companies plus outside roles to run, AI use stayed confined to editing text and emails — 'branch' tasks rather than core work.

The course was built around what DAIJOBU uses internally: folder design for accumulating business rules, security basics, integration with services such as Google Workspace, and organization-wide rollout. The executive sessions came first, before any wider deployment.

The results reported are organizational rather than technical. Information previously gathered by instructing staff can now be organized from Google Workspace, Slack and Notion at once, and the president frames the shift as connecting the trunk of the business rather than using AI at the edges. He also argues the impact may be larger for companies that have done nothing on DX — a claim that runs against the usual assumption, and one that speaks to how low the starting bar is for non-tech firms.