Google Ads September 2026: New Data Strength Tools Give Ecommerce Brands 26% More ROAS

On September 10, 2026, Google announced a major upgrade to its measurement and first-party data infrastructure across Google Ads, Google Analytics, and Display and Video 360. For ecommerce brands running campaigns on Google, the headline number is a 26% increase in incremental ROAS for advertisers who connect offline and app data to Data Manager, and that connection just became significantly easier to make.

What Does Google's New Data Strength Update Mean for Your Campaigns?

Google's Data Manager is now directly integrated into Google Analytics and DV360, meaning your first-party customer data flows automatically across all three platforms without custom engineering work. Enhanced conversions are also launching in both GA and DV360, delivering an average 11% increase in Search conversions compared to standard conversion imports. For ecommerce brands already spending on Google, this is a measurement infrastructure upgrade with concrete, proven performance returns built in.

What Changed Across Google's Measurement Suite on September 10?

The September 10 update covers three distinct areas. First, Data Manager is now integrated directly into Google Analytics and Display and Video 360, so you can manage and activate your first-party data across all three tools from one centralized place. Second, the Data Manager API is now universal, built on the IAB Tech Lab's Event and Conversions API (ECAPI) standard, which lets brands connect and activate audiences and measurement across major ad platforms through a single secure setup. Third, Google introduced the Data Strength Uplift Metric, a new signal inside Google Ads that calculates how many additional conversions your first-party data setup is recovering so you can quantify the value of your data investment.

Built-in diagnostics in Data Manager are also new: they automatically identify and fix data quality issues before they can affect campaign performance, removing the common blind spot of a conversion setup that was configured once and never audited again.

Why Does the Data Strength Uplift Metric Matter for Ecommerce Brands?

The persistent challenge for 7, 8, and 9-figure ecommerce brands has been proving that first-party data infrastructure actually pays off in campaign performance. The Data Strength Uplift Metric directly addresses this by showing you, inside your own Google Ads account, the exact number of conversions your enhanced conversions and Data Manager setup are recovering. Brands using the Google tag gateway see an average 14% conversion uplift overall, and over 20% uplift specifically for Demand Gen campaigns. That lift is now visible in a metric you can track, trend, and share with your leadership team, not just read about in a case study.

For context on how this connects to everything else Google has shipped this year, see our full Google Ads 2026 update tracker.

What Are Google's Latest Meridian MMM Upgrades?

Alongside the Data Manager changes, Google released significant updates to Meridian, its open-source Marketing Mix Model. Three additions stand out for ecommerce brands: new agentic capabilities now help you audit data quality, resolve errors, and guide model building in real time; brand signals like Branded Google Query Volume can now be included directly in Meridian models, connecting upper-funnel YouTube and TV spend to future sales; and Meridian GeoX, Google's library for causal geo-experiments, is now generally available globally after a beta period.

For brands that have never built a Marketing Mix Model, GeoX's general availability removes the cost barrier to starting one. For brands already running MMMs through third-party vendors, Meridian now offers a native, Google-integrated alternative calibrated with real-world incrementality experiments. This is the most complete measurement stack Google has assembled into a single offering.

What Should You Do Now with Google's New Data Strength Tools?

1. Connect Data Manager to Google Analytics. Navigate to Data Manager in your Google Ads account and link your Google Analytics 4 property. This is the fastest single action to activate the 26% incremental ROAS lift for accounts that have not completed this connection yet.
2. Enable enhanced conversions in GA and DV360. If you import conversions from GA or run Display and Video 360 campaigns, enable enhanced conversions for both. The 11% Search conversion increase comes from securely matching hashed customer data at auction time, and the setup requires only your existing Google Tag.
3. Find your Data Strength Uplift Metric baseline. Once Data Manager is connected, locate the new Data Strength Uplift Metric in your Google Ads account. Record the current number. This is the baseline you will improve against over the next 90 days as your data setup matures.
4. Run the Data Manager diagnostics check. Use the built-in diagnostics to identify any data quality issues in your current conversion and audience setup. Data quality problems silently reduce attribution accuracy and bidding performance without triggering any visible alerts in the interface.
5. Explore Meridian GeoX for Q4 incrementality. With GeoX now globally available, set up at least one geo-based incrementality experiment before peak season. Even a small regional test will give you causal lift data that makes your Q4 budget allocation decisions defensible with actual evidence.

Related Reading

• Google Ads August 2026: The Customer Match Upgrade Ecommerce Brands Need Before Q4
• Google Ads August 2026: New AI Insights and Analytics Tools Every Ecommerce Brand Should Start Using Now
• CTC's Google Ads Management for Ecommerce Brands

Frequently Asked Questions

Want help building a first-party data measurement stack that captures the full lift from Google's new tools? Talk to the CTC team about how we build measurement infrastructure for 7, 8, and 9-figure ecommerce brands.