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Google says better data = 20% more conversions

Data Strength Uplift just became a Demand Gen metric. Here's what it can and can't tell you.

Author

Sariga V Gangadharan
October 23, 2026

Helloooo,

Google rolled out three changes to Demand Gen this October:

  • Data Strength Uplift, a new score showing how much your results improve when you send Google better conversion data (more complete, more first-party)

  • Data Manager, now covering DV360 and Google Analytics - previously this tool only connected your data to Google Ads; now it also feeds your video-buying platform (DV360) and your analytics

  • Enhanced conversions coming to DV360 and Google Analytics - a feature that lets you send hashed customer details (email, phone) alongside a conversion, so Google can match it to the right ad click even when cookies fail

In short: Google is making it easier to feed it clean, identity-rich data across more of its products, and now showing you a number for how much that's worth.

Data uplift metric. Source: Google

The number everyone will quote

Google reports an average conversion uplift of over 20% among Demand Gen advertisers using Google Tag Gateway. That's Google's own internal analysis - an average across participating advertisers, not a guaranteed result for any single account. 

Google hasn't published the sample size, the measurement window, or how it isolated Tag Gateway's effect from other account changes in the same period. The same pattern has shown up before with Meta's Conversions API: when match quality improves, reported conversions tend to rise first because attribution gets better at crediting what was already happening, and only later, if at all, because the algorithm starts finding net-new buyers.

For context: Tag Gateway routes your site's tags through your own server/domain instead of firing directly from the browser. That's why it recovers signal, it survives ad blockers and browser tracking restrictions that drop a chunk of direct browser-side pings. 

The 20% figure is plausible for that reason alone; it doesn't need net-new buyers to be true.

What this establishes, and what it doesn't

A 20% uplift in reported conversions establishes that better data reaches Google's systems. It does not establish 20% more revenue. The uplift could be:

  • Recovered signal - conversions that were always happening, now attributed correctly

  • Incremental signal - genuinely new conversions the algorithm can act on because it finally has clean data to optimize against

Google's announcement doesn't separate the two. Reading "20% uplift" as "20% more sales" overstates what changed in your business and understates what's still broken in your pipeline.

What to check before you count this as a win

  • Is your Enhanced Conversions / Tag Gateway setup sending deduplicated events with consistent event IDs, or is your platform's default setup still double-counting?

  • Are you passing hashed identifiers and full browser/session context, or the bare minimum needed to get the event accepted?

  • Can your own reporting distinguish recovered conversions from genuinely new ones?

If you can't answer the third question, Data Strength Uplift will show you a number went up - not why.

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