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2025FOSS4G 2025 speaker Auckland, New Zealand talk

Open Data in Japan has matured rapidly. More municipalities now run their own catalogs, and the volume and diversity of public datasets keep growing. But the moment Open Data leaves the "publishing" phase and enters daily operation, a recognizable set of global challenges appears:

  • Inconsistent structures and formats
  • Maintenance and updates relying on individual effort
  • Difficulty coordinating across departments
  • Limited connection between catalogs and databases
  • Data that is published but not easily consumable by systems or applications

These are not the shortcomings of any single organization — they are the shape of Open Data operations worldwide. Data can be published; sustaining, structuring, and integrating it is the harder problem.

In this talk I reframed Open Data through the lens of operations rather than publishing, and shared one of the directions our team has been exploring: treating each dataset as a structured, collaboratively editable, API-ready object — managed in a lightweight, multi-user CMS that our team builds in the open (Re:Earth CMS). The aim is to close the gap between Open Data catalogs and the urban systems, visualization tools, and civic technology that actually consume them.

Open Data is not a one-time publication. It is a continuous practice — and the tools we use to operate it matter as much as the policies that drive it.