{
  "taxonomy": "NACE",
  "publisher": "Eurostat",
  "current_revision": "Rev. 2.1",
  "reference_year": 2025,
  "revisions": [
    {
      "id": "rev-1",
      "code": "Rev. 1",
      "year": 1990,
      "title": "The first EU-wide activity classification",
      "summary": "Adopted by Council Regulation (EEC) No 3037/90 to unify statistical reporting across the (then) European Communities and align with the UN's ISIC Rev. 3.",
      "changes": [
        "First binding classification of economic activities across the Community.",
        "21 sections, hierarchical to four digits.",
        "Aligned with ISIC Rev. 3 at the two-digit level."
      ]
    },
    {
      "id": "rev-1-1",
      "code": "Rev. 1.1",
      "year": 2002,
      "title": "Minor revision",
      "summary": "Regulation (EC) No 29/2002 introduced targeted refinements without touching the overall structure — new sub-classes for emerging services and small mapping corrections.",
      "changes": [
        "New sub-classes for a handful of service activities.",
        "Structure unchanged; direct correspondence with Rev. 1.",
        "Applied from reference year 2003 onwards."
      ]
    },
    {
      "id": "rev-2",
      "code": "Rev. 2",
      "year": 2008,
      "title": "Major overhaul, service-economy focus",
      "summary": "Regulation (EC) No 1893/2006 replaced Rev. 1.1 entirely, restructuring around service sectors and adopting ISIC Rev. 4. This is the version most existing systems still run on.",
      "changes": [
        "Complete restructuring — 21 sections, 88 divisions, 272 groups, 615 classes.",
        "Adopted ISIC Rev. 4 as the international reference.",
        "New sections for information, professional and administrative services.",
        "Break in time series: every historic point needs a Rev. 1.1↔Rev. 2 bridge."
      ]
    },
    {
      "id": "rev-2-1",
      "code": "Rev. 2.1",
      "year": 2025,
      "title": "Digital and green economy update",
      "summary": "Amending Regulation adopted in 2023, applied from reference year 2025. Adds platform-economy, data-centre, circular-economy and renewable-energy classes on top of the Rev. 2 backbone.",
      "changes": [
        "658 classes (up from 615) — mostly additions in digital and green sectors.",
        "New classes for platform-mediated services and gig work.",
        "Refined data-centre, cloud infrastructure and specialised digital services.",
        "Circular-economy: repair, reuse and recycling classes restructured.",
        "Renewable-energy generation split out from generic electricity production.",
        "Official Rev. 2 ↔ Rev. 2.1 correspondence table published by Eurostat."
      ]
    }
  ],
  "legal_basis": [
    "Regulation (EC) No 1893/2006",
    "Commission Delegated Regulation (EU) 2023/137"
  ],
  "international_alignment": {
    "current": "ISIC Rev. 5 (UN, 2023)",
    "previous": "ISIC Rev. 4 (UN, 2008)"
  }
}