Segment

Customer data platform — one install, fan events out to 300+ downstream destinations.

Configure

{
  "integrations": {
    "segment": "abcxyz123"
  }
}

Where to find your write key

Segment workspace → Sources → your JavaScript source → Settings → API Keys → Write Key.

Or set it from the dashboard — Editor → Configurations → AI & Advanced → Integrations.

Gotchas

• Don't also ship a destination that Segment already forwards to (e.g. GA4 via Segment + ga4 here = double counting).

Loading behavior

• Strategy: afterInteractive — injected after page interactivity, so it never blocks first paint.

• CSP: if you enforce a Content Security Policy, allowlist https://cdn.segment.com in script-src.

• Removal: delete the integrations.segment key (or blank it in the dashboard) and redeploy — the script disappears on the next page load.

Related

• Segment vendor docs

• Integrations overview

• Schema reference — integrations — auto-generated field listing