Google is moving from counting past conversions to selling you a prediction of future ones, so measurement is now a governance decision, not a reporting upgrade.
A director trusts a number because it counts something that happened. Last-click and short-window attribution already understate long-cycle B2B value, and now Google is injecting a metric that grades not what happened but what its model thinks will happen. That changes the question from "is this accurate?" to "how much do I trust a vendor's math about my future?"
Measurement Just Started Predicting
The incumbent way measures backward. A conversion fires, a system counts it, and the report reflects events that occurred. Predictive attribution measures forward. It estimates the future value of today's spend and reports the estimate as if it were a result.
Google announced two moves in this direction at Google Marketing Live on May 20, 2026 (PPC Land). One is a genuine upgrade. The other is optimization fuel dressed as measurement.
Meridian: Open Enough to Audit
Meridian is described on Google's own developer site as an open-source marketing mix model built by Google that delivers budget optimization and methodology guidance (Google Meridian). That page does not state a launch date, does not use the word "Bayesian," and does not mention the Analytics 360 integration, so treat those specifics as coming from secondary reporting (Google Meridian).
Marketing mix modeling is aggregate and privacy-durable. It does not depend on tracking individuals, and because Meridian is open source, its assumptions can be inspected rather than taken on faith. Trade reporting states Google integrated Meridian directly into Analytics 360 at Google Marketing Live, which puts a defensible causal method inside the stack directors already use (PPC Land). That is open in the way that matters: a method you can audit.
Qualified Future Conversions: Whose Math?
The second move is different. PPC Land reports Google introduced Qualified Future Conversions, a Gemini-powered Google Ads metric that links today's spend to predicted future sales through signals like brand searches, currently in a restricted global pilot with a beta planned later in 2026 (PPC Land). This is secondary reporting on a pilot, so hold the details loosely until the beta clarifies them (PPC Land).
Name the conflict of interest. An ad platform is grading its own future-revenue contribution. Qualified Future Conversions is a bidding input the platform benefits from, presented in the language of measurement. It may make bids smarter. It is not a neutral scorecard of what Google's ads will earn you, because Google both writes the prediction and profits from the spend it justifies.
Keep One Layer Google Doesn't Own
The durable position for a large firm is to separate the two. Welcome Meridian's open, aggregate, privacy-durable approach as a causal input to budget decisions. Quarantine Qualified Future Conversions as a bidding signal only. And keep at least one measurement layer the platform does not own, so the number you report upward is not authored by the vendor selling the media.
Attribution independence is the moat. The firm that outsources its scorecard to the platform loses the ability to check the platform.
The Fork You Now Face
You have two ways to absorb predictive attribution. Let a platform-predicted metric become the primary revenue KPI you report to the board, and trust Google's model of your future. Or adopt marketing mix modeling for causal budget decisions, treat Qualified Future Conversions as a directional bidding signal, and keep an independent measurement layer.
That is not measurement. That is a vendor forecasting its own value.
A prediction you cannot audit is a story. A scorecard the seller writes is marketing. A revenue KPI you do not own is a number you cannot defend.
Predict with it, do not report on it. Use Meridian where it earns trust, cage Qualified Future Conversions as a bidding input, and never let a platform's prediction become the top-line revenue truth the board sees.
Keep one layer Google does not own, and you keep the ability to check the rest.
Work With Magnet
Magnet builds attribution and measurement that stays independent of the platforms buying the media, so causal budget decisions run on math the firm can audit. See how Magnet approaches measurement at https://www.magnet.co.
Sources
- PPC Land, Meridian lands inside Analytics 360 as Google links ad spend to future sales: https://ppc.land/meridian-lands-inside-analytics-360-as-google-links-ad-spend-to-future-sales/
- Google, Meridian developer documentation: https://developers.google.com/meridian
- Magnet: https://www.magnet.co
