E-commerce
September 18, 2026
Are you wondering how to decipher Google Ads explanations to improve your performance? These new blue notifications that have appeared in your interface are not there for decoration: they help you understand at a glance why your clicks, impressions, or conversions are fluctuating. For an e-commerce merchant, this is a valuable time-saver: instead of searching every corner of your account for the cause of a drop in traffic, Google Ads shows it to you directly, thanks to machine learning.
Be careful, this feature is still limited: for now, it only applies to Search campaigns with manual or enhanced bidding, and certain metrics. But it foreshadows a future integration with Shopping and Display, which could revolutionize your daily monitoring. So, how do these explanations work and how can you use them wisely? On the agenda:
What are Google Ads explanations and why should you use them?
Where can you find the explanations in your Google Ads interface?
How do you interpret variations in clicks and impressions?
What are the nine areas analyzed by the explanations?
How do you integrate these insights into your e-commerce strategy?
Let's get started.
Summary
What are Google Ads explanations and why should you use them?
Google Ads explanations are a recent feature that uses machine learning to provide you with insights into significant performance variations in your account. Specifically, when you see a spike or a drop in a metric like clicks, impressions, or conversions, Google Ads automatically analyzes the possible causes and presents them to you as clickable notifications.
For an e-commerce merchant, this is a valuable tool: instead of spending hours digging through reports, you get a direct explanation. For example, if your impressions drop, the tool can indicate that a change in negative keywords has reduced your reach. This allows you to react quickly, whether to adjust your bids or your content.
This feature is not revolutionary in itself, as all the data already exists in your account. However, it centralizes and presents it in a clear manner, which is a considerable time-saver, especially when you are managing multiple campaigns.
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Where can you find the explanations in your Google Ads interface?
To access explanations, you must first ensure that your Search campaigns use manual or enhanced bidding (CPC). Then, in the Google Ads interface, click on "Search campaigns" in the left menu. Select a period of less than 90 days, for example the last 30 days, and you will see metrics appear in blue and underlined, such as clicks, impressions, cost, and conversions.
Hover your mouse over one of these metrics: a tooltip will appear, indicating, for example, "750 more clicks than the previous 30 days". Click on "View explanations" to open a side panel detailing the detected changes and their potential impact on your campaign.
This panel is designed to be intuitive: it identifies the campaign, the period, and the metric concerned, then explains what has changed and what it means for you. It is an excellent starting point for quickly diagnosing a problem.
How to interpret variations in clicks and impressions?
Explanations help you understand why your clicks or impressions have changed. For example, if you added a negative keyword list, the tool can show you that this resulted in a 27% drop in impressions and a 14.85% drop in clicks. These figures are valuable for evaluating the impact of your actions.
Let's take another case: you modified a bid modifier for certain states. The explanation points this out to you, as well as the consequence on visibility. You can then decide whether this change is beneficial or needs to be adjusted.
The important thing is not to panic when faced with a drop: explanations give you the context. If a variation is due to a change you made, you can validate or correct it. If it is due to an external factor, such as competition, you can adapt your strategy accordingly.
What are the nine areas analyzed by the explanations?
Explanations cover nine key areas of your Google Ads account. This includes bid adjustments (all modifiers: device, location, demographics, audience), keyword changes, budget modifications, competition variations, and much more.
Each area is analyzed automatically, and the results are presented in a diagnostic report at the bottom of the panel. This report is comprehensive: it shows you not only what changed, but also how it affects your performance.
For example, if a competitor increases their bids, the explanation can show you that their ads are appearing above yours more often, with a precise percentage. This gives you a clear view of the competition, without having to manually check auction insight reports.
How do explanations help identify problems quickly?
One of the main benefits of explanations is the speed of diagnosis. Imagine you receive an email from a client reporting a drop in volume. Instead of searching for the cause in multiple reports, you open Google Ads, hover over the metric in question, and the explanation gives you the answer in a few seconds.
This is particularly useful for teams where multiple people manage the account. For example, if a colleague added negative keywords without telling you, the explanation will reveal it to you. This saves you hours of research and allows you to act immediately.
Additionally, explanations do not just point out the problem: they also suggest interpretations. For example, a drop in clicks may be due to an increase in competition, prompting you to review your bids or content.
What are the current limitations of Google Ads explanations?
Currently, explanations are only available for Search campaigns with manual or enhanced bidding. They do not yet cover Shopping or Display campaigns, which is a limitation for e-merchants who heavily use these formats.
Furthermore, they only concern certain metrics: clicks, impressions, cost, and conversions, over a maximum period of 90 days. This means that if you are using automated bidding, you will not see these explanations for the time being.
However, Google is likely to extend this feature to other campaign types in the future. For Shopping campaigns, for example, performance variations are often linked to issues in Google Merchant Center, such as disapproved products. Integration would be natural and beneficial.
How will explanations evolve for e-commerce?
Google Ads has announced its intention to extend explanations to other campaign types, including Shopping and Display. For e-merchants, this means that performance variations can be explained by taking Merchant Center data into account.
For example, if your clicks drop because 15 products have been disapproved in your feed, the explanation could point this out to you directly. Currently, Merchant Center notifications exist, but they are separate from Google Ads. An integration would make the diagnostic process much smoother.
This development is crucial for merchants who rely heavily on Shopping. It would save precious time and prevent costly mistakes, such as continuing to bid on unsellable products.
How to use explanations to optimize your Search campaigns?
To get the most out of explanations, start by checking them regularly, especially after making changes to your campaigns. For example, if you change your bids or keywords, check the explanations to see the immediate impact.
Use the insights to adjust your strategy. If an explanation shows that a competitor is appearing more often, you can increase your bids or improve the quality of your ads. If a drop is due to a change you made, you can decide to keep it or revert it.
Finally, share these learnings with your team. Explanations are an excellent communication tool: they allow everyone to understand performance without having to dig into raw data.
What are the pitfalls to avoid with Google Ads explanations?
The first pitfall is to take explanations as absolute truths. They are based on correlations, not always causalities. For example, a drop in clicks may be attributed to a change in keywords, but there may be other factors at play.
Second pitfall: neglecting explanations because they do not cover all of your campaigns. Even if they are limited, they offer valuable insights for Search campaigns. Use them as a complement to your other analytical tools.
Finally, do not rely solely on explanations to make decisions. Cross-reference them with your own data, such as your conversion reports or business goals. Explanations are a starting point, not an end in themselves.
How do you integrate explanations into your daily management routine?
To integrate explanations into your routine, get into the habit of checking them every morning, at the same time as your emails and reports. This allows you to quickly detect anomalies and respond to them before they worsen.
Create a process: if an explanation signals a drop in performance, take note of it and decide on an action. For example, if a competitor is gaining positions, you can plan a bid increase or a redesign of your ads.
Finally, document recurring explanations. If you often see the same causes, it may indicate a structural problem in your account, such as keywords that are too broad or poorly calibrated bids. Use this information to improve your long-term strategy.
How does Qstomy help to leverage Google Ads explanations?
Qstomy, as a Shopify AI agent, can complement Google Ads explanations by optimizing your conversion funnel. While Google Ads explains why your clicks vary, Qstomy acts on what happens after the click: it guides your visitors toward purchase through personalized recommendations, complementary product suggestions, and smart cart management.
Concretely, if an explanation reveals a drop in conversions, Qstomy can help you improve your conversion rate by offering smoother shopping experiences. For example, it can send parcel tracking notifications, reduce cart abandonment with reminders, and offer responsive customer support via chat.
By combining Google Ads insights with Qstomy's optimization, you maximize the return on every click. It is a powerful synergy for any e-commerce merchant looking to boost sales.
What checklist should you use to leverage Google Ads explanations effectively?
Here is a checklist to get the most out of Google Ads explanations:
Check availability: make sure your Search campaigns use manual or enhanced bidding.
Monitor key metrics: clicks, impressions, cost, conversions, over a 30-day period.
Analyze explanations: read each notification and note the possible causes.
Cross-reference with your data: compare with your conversion reports and your goals.
Act quickly: adjust your bids, keywords, or content based on the insights.
In brief
Google Ads explanations are a powerful tool for understanding performance variations. Although limited to Search campaigns, they offer valuable and quick insights. By combining them with Qstomy, you can not only understand but also act to improve your sales.
FAQ
Are explanations available for Shopping campaigns? Not yet, but Google plans to extend them.
Can I use explanations with automated bidding? No, currently they only work with manual or enhanced bidding.
Are the explanations reliable? They are based on correlations, so they should be used with caution.
To go further: How does Google rank Shopping ads? Ad Rank, feed, and bidding - Qstomy, Optimize your SEO strategy with AI: Google framework, processes, and Shopify - Qstomy, Increase sales with smart product recommendations - Qstomy, Can you sell Amazon products on Shopify? - Qstomy, E-commerce SEO strategy for category pages - Qstomy, Using AI in your SEO strategy: Google framework, Shopify Magic, and governance - Qstomy, Feedback loop: tracking feedback to optimize your products - Qstomy.
Enzo
September 18, 2026
