Data Measured

22 Jun 2026 · GTM · low severity · fix verified 9 Sept 2026

Improved measurement of server-to-server conversions (Floodlight)

'Server-side data is intelligently joined with parallel browser signals, such as cookies, when a GCLID is present so that Floodlight can more accurately attribute conversions.'

Source: Google Tag Manager release notes — Jun 22, 2026.

What it breaks

Floodlight conversion counts step up from the release date without any change on your side; a trend break, not a performance change.

Who it hits: Server-side Floodlight setups.

The fix

Annotate 22 June 2026 in the Floodlight reports; do not read the step as lift.

No artifact for this entry — the note above is the whole fix.

Sources linked on every entry · artifacts stamped and re-verified · ← all changes