If you’ve followed any of the announcements from Google Marketing Live 2026, you’ll probably have noticed one phrase mentioned by many of the speakers – Data Strength. Data integrity has become a priority for Google because AI-powered advertising is only as good as the data that fuels it. As Google’s automation becomes more advanced, simply installing a tracking tag on your website is no longer enough. To get the best results from Google Ads, businesses need to give Google a far more comprehensive view of how customers interact with their brand – which has become far more challenging with other changes around cookies, privacy and GDPR in recent years.
What Is Data Strength?
Google says that “Data Strength is a foundational pillar of modern marketing, centred on building a trusted decision engine with first-party data.” In simple terms, Data Strength involves connecting and enriching all your customer data so Google’s AI can make more informed decisions when serving and optimising your campaigns.
Rather than relying solely on browser tracking, Google wants advertisers to combine data from multiple sources, including their website, CRM, Google Analytics, Google Ads, offline sales and customer interactions. When combined, these signals create a much clearer view of the customer journey. The more enriched your data is, the better Google’s AI can identify valuable customers and optimise bidding to improve your campaign performance.
The Four Pillars of Data Strength
Google’s best practices for Data Strength are built around four key actions:
Connect All Your Data Sources
The first step is to build a complete measurement foundation. Google recommends implementing the Google Tag or Google Tag Manager (GTM) to capture website activity, integrating Google Analytics and Google Ads and connecting CRM and offline sales through its Data Manager and API. Setting this up allows Google to understand both online and offline customer journeys.
Enrich Your Data
Once your data is connected, the next step is to enrich it with additional customer signals. These include data such as customer email addresses, conversion values and purchase data. Richer signals help Google’s AI identify which users are most likely to take action and optimise campaigns around business outcomes rather than basic conversions.
Activate Google AI
A stronger data foundation provides you with access to Google’s AI-powered campaign features. This includes Smart Bidding strategies such as Target ROAS, Performance Max campaigns, Customer Match audiences and lookalike segments. Here is where Google will use your customer data to decide what action to take to power your campaigns.
Prove Your ROI
In this final step, you can now measure whether your investment is paying off. Google recommends using tools such as Meridian, its open-source marketing mix model, along with the GA4 Budgeting Tool inside Google Analytics to evaluate performance and allocate budget more effectively.
Why Data Strength Is Important Now
For businesses, the takeaway is that measurement is becoming more sophisticated. A website tag on its own no longer provides enough information to maximise campaign performance. Google’s AI now depends on robust first-party data to identify high-value customers and predict future behaviour to optimise campaigns. Brands with complete data foundations will have more advanced audience targeting and smarter bidding decisions. Those relying on limited tracking might find it harder for Google and other platforms’ AI to deliver the same level of performance.
The Final Word
Data Strength gives us a good indication of where paid media and other digital channels are heading. Businesses that collect and enrich their first-party data effectively will be in a much stronger position to improve their marketing performance and demonstrate ROI.
If you’re unsure whether your current tracking setup is providing the strongest possible foundation, we’d be happy to review it with you. Please feel free to contact us.