What the
Latest Updates Mean for Performance Marketers
On 10
September 2026, Google announced several updates to its advertising
measurement tools, focusing on first-party data integration, conversion
measurement, Marketing Mix Modeling (MMM) and incrementality testing.
The updates
cover Google Ads, Google Analytics, Display & Video 360 (DV360), Data
Manager and Meridian.
For performance
marketers, the developments are relevant to three areas: improving conversion
data quality, understanding marketing's contribution to business results and
measuring incremental advertising impact.
Understanding
the Tools
Before
examining the updates, here is a brief overview of the tools involved.
- Google Ads: Google's advertising platform for
managing campaigns across Search, YouTube, Display and other supported
inventory.
- Google Analytics (GA): A measurement platform for
understanding website and app activity, user behaviour and conversions.
- Display & Video 360 (DV360): Google's demand-side platform
(DSP) for planning, buying, managing and measuring programmatic
advertising campaigns.
- Google Data Manager: A tool for connecting, managing
and activating first-party customer data across supported advertising and
measurement platforms.
- Enhanced Conversions: A measurement capability that uses
securely processed first-party customer data to improve conversion
matching.
- Meridian: Google's open-source Marketing Mix
Modeling (MMM) solution for evaluating how marketing investments
contribute to business outcomes.
- Meridian GeoX: Google's open-source framework for
conducting geographic experiments to estimate advertising's incremental
impact.
1. Data
Manager Integration Expands to Google Analytics and DV360
What's New?
Google is
integrating Data Manager directly into Google Analytics and DV360.
This is
designed to simplify how advertisers connect, manage and activate first-party
data across these platforms.
Google is also
introducing Enhanced Conversions in Google Analytics and DV360 to improve
conversion matching.
Google reports
that advertisers connecting offline and app data to Data Manager see an average
26% increase in incremental ROAS.
Practical
Example
Consider an
eCommerce advertiser running campaigns through DV360.
Customers
interact with advertisements, visit the website and complete purchases.
However, not
every purchase may be successfully matched to an advertising interaction.
Enhanced
Conversions can help improve conversion matching using eligible first-party
customer information.
With Data
Manager integration, the advertiser also has a more streamlined way to connect
and activate relevant first-party data.
Why it
matters: More complete
conversion information can help marketers evaluate campaign performance and
make better-informed optimization decisions.
2. Universal
Data Manager API and New Diagnostics
What's New?
Google has
announced that its Data Manager API is now universal, based on the IAB Tech
Lab's Event and Conversions API (ECAPI) standard.
The API is
designed to provide a unified approach to connecting, managing and activating
audience and measurement data across major advertising platforms.
Google is also
introducing built-in diagnostics to identify and address data issues.
Practical
Example
Consider a
retailer managing customer and purchase data across several systems.
The business
wants to use relevant first-party information for advertising measurement and
audience activation.
Instead of
maintaining entirely separate data connections for every supported integration,
the universal Data Manager API is designed to simplify how these connections
are established and managed.
Built-in
diagnostics can also help identify issues affecting data quality.
Why it
matters: Marketers can
benefit from more reliable data connections and fewer measurement problems
caused by incomplete or incorrect data transfers.
3. New Data
Strength Uplift Metric in Google Ads
What's New?
Google is
introducing a Data Strength Uplift Metric within Google Ads.
The metric
calculates the additional conversions recovered through improvements in an
advertiser's first-party data setup.
Google reports
that advertisers using Google tag gateway observe an average 14% conversion
uplift, exceeding 20% for Demand Gen campaigns.
Practical
Example
Consider a
Google Ads campaign that initially reports 1,000 conversions.
After
improvements to the advertiser's first-party data setup, the platform
identifies additional conversions that were previously not measured.
If the improved
setup recovers another 50 conversions, reporting would increase to 1,050
conversions.
This is an
illustrative calculation, not a Google-reported result.
The
important distinction:
Those 50 additional reported conversions do not necessarily represent 50 new
purchases generated by advertising.
They may
represent purchases that already occurred but were not previously captured.
Why it
matters: Marketers can
better understand whether changes in reported performance reflect improved
measurement or actual business growth.
4. New
Capabilities in Meridian Marketing Mix Modeling
What's New?
Google has
announced several improvements to Meridian, its open-source Marketing Mix
Modeling solution.
These include:
- Agentic AI capabilities: Help with data quality checks,
error resolution and model development.
- Faster modeling: Improvements to Meridian's
underlying infrastructure to make analysis more efficient.
- Brand signals: The ability to incorporate signals
such as Branded Google Query Volume into marketing mix models.
The addition of
brand signals is intended to help advertisers evaluate how brand-building
activities, including video and TV advertising, contribute to future sales.
Practical
Example
Consider an
advertiser investing across Google Search, YouTube, DV360 and other advertising
channels.
Search
campaigns may capture customers who are already actively looking for a product.
Video and TV
campaigns may contribute to awareness and demand before those customers begin
searching.
Looking
exclusively at individual campaign conversion reports may not provide a
complete understanding of these contributions.
Meridian can
help evaluate how different marketing investments contribute to overall
business outcomes.
With the new
brand-signal capabilities, advertisers can also incorporate relevant branded
search activity into their models.
Why it
matters: Marketers can
evaluate media investment from a broader business perspective, including the
potential contribution of upper-funnel advertising to future sales.
5. Meridian
GeoX Is Now Generally Available Globally
What's New?
Google has
announced the global general availability of Meridian GeoX.
GeoX is an
open-source framework for conducting causal geographic experiments across
advertising platforms.
Advertisers can
also incorporate incrementality results into Meridian models to help improve
their accuracy.
Practical
Example
Consider a
retailer evaluating the incremental impact of a video advertising campaign.
The advertiser
runs a geographic experiment using appropriately selected test and control
markets.
Advertising
runs in the test markets, while the control markets are used to estimate what
would have happened without that advertising activity.
By analysing
the difference in business outcomes through a suitable experimental design, the
advertiser can estimate the additional sales attributable to the campaign.
This is
different from simply counting conversions attributed to advertising by a
platform.
Why it
matters: GeoX can help
marketers evaluate whether advertising is generating additional business rather
than only receiving credit for conversions.
The findings
can also support broader marketing measurement through Meridian.
What These
Updates Mean for Performance Marketers
Google's
September announcement brings improvements across three important areas of
advertising measurement.
1. Better
First-Party Data and Conversion Measurement
Data Manager
integration, Enhanced Conversions and the universal Data Manager API are
intended to simplify data connections and improve conversion measurement.
For marketers,
the focus is on obtaining more complete and reliable information for campaign
reporting and optimization.
2. Greater
Visibility Into Measurement Improvements
The new Data
Strength Uplift Metric provides a way to quantify additional conversions
recovered through stronger first-party data collection.
This helps
distinguish improvements in conversion reporting from actual increases in
business activity.
3. Better
Evaluation of Marketing Effectiveness
Meridian's new
capabilities and the global availability of GeoX provide additional ways to
evaluate marketing contributions and incremental business outcomes.
These tools can
support advertisers looking beyond individual platform reports to understand
the wider impact of their media investments.
Final
Perspective
For performance
marketers, these updates are relevant to both campaign execution and broader
media investment decisions.
Data Manager
and Enhanced Conversions focus on improving the quality and availability of
conversion information.
The Data
Strength Uplift Metric helps quantify improvements in conversion measurement.
Meridian
provides a broader view of marketing contributions, while GeoX supports causal
experiments to estimate incremental advertising impact.
The key is
understanding the difference between measuring conversions, evaluating
marketing contributions and proving incremental business outcomes.
Each serves a
different purpose, and together they can provide a more complete foundation for
evaluating advertising performance and making informed investment decisions.


