In a nutshell:
- In March, Google launched the first major core update of the year.
- It has been active for six days and is expected to run until the 10th.
- At the same time, there were two other updates in March. What’s behind them, who does it affect, and what do we recommend to our clients? Here are the facts. Three Google updates in one month […]
On March 27, Google launched the first major core update of the year. It has been active for six days and is expected to run until April 10. At the same time, there were two other updates in March. What’s behind them, who does it affect, and what do we recommend to our clients? Here are the facts.
Three Google Updates in One Month
March 2026 was unusual. Google released three updates within a few weeks. This is causing confusion in Search Console because fluctuations are difficult to attribute to a single update.
The timeline:
February 5–27: The Discover Core Update. For the first time, Google rolled out a Core Update exclusively for Google Discover. Discover is the personalized news feed on Android devices and in the Google app. The update prioritizes local content and penalizes clickbait.
March 24–25: The Spam Update. At under 20 hours, this was the shortest confirmed spam update in Google’s history. It targets websites using manipulative tactics: bought links, spam content, and technical tricks.
March 27 to approx. April 10: The Core Update. This is the big one. A Core Update does not evaluate individual rule violations. It recalibrates the entire ranking system. Google has described it as a “regular update” designed to make “relevant, satisfying content from all types of websites” more visible.
What a Core Update Is (and Isn’t)
A Core Update is not a penalty. This is important to understand. If your website gets fewer visitors after a Core Update, it doesn’t mean you did something wrong. It means: Google now considers other pages more helpful for the same search query.
Think of it like a competition. The rules don’t fundamentally change. But the evaluation criteria shift. Pages that were previously “good enough” may no longer be sufficient. In the meantime, other pages have built better content, faster load times, or stronger trust signals.
Google deliberately does not publish specific lists of actions for Core Updates. The official recommendation has remained the same for years: Create helpful, reliable content for people, not for search engines.
What’s changing with this update
Although Google does not publish details, early data and analyses show clear patterns. The SEMrush Sensor reached a volatility score of 9.5 out of 10. This is among the highest scores ever recorded for a Core Update. More than 55 percent of monitored websites experienced ranking shifts in the first week.
Information Gain: Originality Matters
The most significant shift concerns what is known in the industry as “Information Gain.” Simply put: Google now places greater emphasis on whether your page contributes something original. A page that merely summarizes what’s already on other pages loses ground to pages with their own data, experiences, or perspectives.
This sounds obvious, but it has major implications. Many corporate websites have how-to pages that explain the same things as hundreds of other websites. It is precisely these pages that are now losing visibility.
What works better: concrete examples from your own projects, your own data, and real-world case studies.
AI Content: Quality Filters Are Getting Stricter
The update did not ban AI-generated content. But it refined the filters. The data shows a clear pattern:
Content created with AI and then editorially revised (real-world examples, in-house expertise, human quality control) maintains its rankings or improves.
Content produced purely by machines (fluently written but lacking substance) is losing ground.
Pure mass production using AI without human oversight is falling the hardest.
For businesses, this means: Using AI as a tool is fine. AI as a substitute for expert knowledge no longer works.
Core Web Vitals: Technical factors carry more weight
With this update, a website’s technical performance has gained more weight. Three metrics are crucial:
LCP (Largest Contentful Paint): How quickly does the most important content load? Websites under 2.5 seconds remain stable or gain ground. Websites over 4 seconds lose out to faster competitors.
INP (Interaction to Next Paint): How quickly does the page respond to clicks or input? The threshold is 200 milliseconds.
CLS (Cumulative Layout Shift): Does the content shift while loading? If images, ads, or embedded elements cause the page layout to shift, Google penalizes this.
In practice, we see the same issues on many SME websites: images without defined dimensions, too much third-party JavaScript, slow servers. These aren’t new issues. But with this update, they have a greater impact on rankings.
What SISTRIX has observed so far
SISTRIX, the well-known German SEO analytics company, is publishing ongoing analyses during the rollout. As of April 1, 2026: There are still no major shifts among the top 100 domains in the German and UK SERPs (search engine results pages).
That doesn’t mean nothing is happening. SISTRIX points out that the already high background volatility of recent weeks may be masking the effects of the Core Update. Individual domains are already showing changes, but a clear pattern for the DACH region is not yet apparent.
Patience is needed for a final assessment. Google recommends waiting at least one week after the rollout is complete before drawing conclusions.
What SMEs Should (and Shouldn’t) Do Now
Don’t
No panic changes during the rollout. The update is still ongoing. Rankings are fluctuating. What looks like a loss today may have normalized in a week. Anyone who frantically revamps pages now will make analysis impossible afterward.
No blanket ban on AI-generated content. AI-generated content isn’t the problem. Content without substance is the problem, whether written by AI or a human.
Do
Monitor Search Console. Check impressions and clicks daily. Don’t react—just document. Once the update is complete (around April 10), compare the data: Which pages gained ground? Which lost it? Why?
Create content with your own added value. Your own experience, your own data, your own perspective. That’s the most powerful lever. Don’t repeat what Google already knows; instead, contribute something only you can provide.
Check Core Web Vitals. Look under “Core Web Vitals” in Search Console. Are there pages with a status of “Poor” or “Needs Improvement”? Tackle these first: compress images, clean up JavaScript, check hosting.
Strengthen author profiles. According to industry data, 73 percent of top-ranking pages now display detailed author information. Anyone publishing content without clearly showing who’s behind it has a distinct disadvantage.
How we handle this at Waterproof Web Wizard
We have been monitoring the Search Console for our client projects daily since March 27. So far, we haven’t seen any significant changes in the TYPO3 and WordPress projects we manage. That may change in the coming days.
Our approach for client projects:
Through April 10: Monitoring, no interventions. We document fluctuations, but we don’t make any changes.
Starting in mid-April: Analysis. Which pages have moved? Why? Are there any patterns?
If necessary: Targeted improvements. Deepen content, fix technical issues, refine author profiles. No knee-jerk reactions, just craftsmanship.
The March 2026 Google Core Update is no cause for alarm. It is a reason to honestly evaluate your own website: Is the content truly helpful? Does the page load quickly? Is it clear who is behind it? If so, there is no cause for concern. If not, now is a good time to address it.
Frequently Asked Questions
What is the Google Core Update March 2026?
A Core Update is a broad reassessment of Google’s ranking system. It has been running since March 27, 2026, and affects all websites worldwide. Google uses it to recalibrate which pages are classified as more helpful and relevant. It is not a penalty for individual websites.
Will you lose your Google rankings because of the update?
Not necessarily. Core updates cause fluctuations. Some pages gain, some lose, and many remain stable. If your site offers helpful, original content and runs smoothly from a technical standpoint, your chances are good. Google recommends analyzing your site after the rollout is complete (around April 10), not during it.
Is AI-generated text now bad for SEO?
No. AI as a tool is not a problem. The problem is content lacking substance, whether created by machine or manually. Texts created with AI and then enriched with real expertise and original examples maintain their rankings or improve, according to current data.
What does Information Gain mean for your website?
Information Gain describes how much unique value your site offers compared to other sites on the same topic. Google now places greater emphasis on this. Sites with their own data, their own experiences, and concrete real-world examples benefit. Sites that merely summarize what others have already written lose visibility.
Are you unsure how your website is positioned after the update? I’ll take a look at it for you. Data-driven, without scaremongering, and with a clear recommendation. Request an initial consultation.
Dennis Hüttner Waterproof Web Wizard GmbH
Sources
- SISTRIX: March 2026 Core Update Radar, Visibility Analysis and Background sistrix.com
- Search Engine Journal: Google Begins Rolling Out March 2026 Core Update (March 27, 2026) searchenginejournal.com
- Search Engine Land: Google March 2026 Core Update rolling out now (March 27, 2026) searchengineland.com
- Google Search Status Dashboard: March 2026 Core Update status.search.google.com