{
  "kind": "exploration_reference",
  "technique": "Segment overlap",
  "location": "Explore > Segment overlap template",
  "dimensions": [
    "User segment",
    "Session segment"
  ],
  "metrics": [
    "Users"
  ],
  "checkpoints": [
    "Two or three segments defined first",
    "Up to three segments on the canvas",
    "Overlap counts read beside segment sizes",
    "Overlap share computed",
    "Saved under the comparison name"
  ],
  "guide": "segment-overlap-exploration",
  "title": "Build a segment overlap exploration: how much your audiences actually share",
  "worked_example": {
    "rows": [
      {
        "segment": "Purchasers",
        "users": 1240,
        "also_in_first_segment": 1240
      },
      {
        "segment": "Email subscribers",
        "users": 2860,
        "also_in_first_segment": 868
      },
      {
        "segment": "Mobile users",
        "users": 3420,
        "also_in_first_segment": 744
      }
    ],
    "totals_recomputed": {
      "segments": 3
    }
  },
  "verification": "Figures recomputed in Python 3 with decimal arithmetic, 2026-11-11. No live GA4 run."
}