Google's March 2025 Core Update: What Changed and What to Do

Google's March 2025 core update began rolling out on March 5, 2025, and — like all core updates — it represents a broad reassessment of how Google's systems evaluate and rank web content. For businesses that depend on organic search traffic, understanding what these updates target and how to respond is essential.

This is not a minor algorithmic tweak. Core updates can cause significant ranking fluctuations across industries, and the March 2025 update is no exception. Here is what we know so far, what the update appears to target, and what practical steps you can take.

What Is a Google Core Update?

Google makes thousands of small changes to its search algorithms every year. Most go unnoticed. Core updates, however, are different — they are significant, broad changes to Google's ranking systems that can affect search results across all regions and languages.

According to Google's own documentation on core updates, these updates are designed to improve the overall relevance and quality of search results. Pages that drop in rankings after a core update have not necessarily done anything wrong. Instead, Google's systems have re-evaluated how content across the web compares, and some pages may now be assessed differently relative to others.

Google uses the analogy of a list of the top 100 films. If you made that list in 2020 and revisited it in 2025, new films would naturally appear, and some rankings would shift — not because the original films got worse, but because the landscape changed.

What the March 2025 Update Appears to Target

While Google does not publish a precise list of ranking factor changes with each core update, patterns emerge from industry-wide data and Google's published guidance. Based on early observations, the March 2025 core update appears to continue Google's focus on three key areas:

1. Thin and Low-Value Content

Pages that exist primarily to rank for keywords rather than to provide genuine value to readers continue to be downgraded. This includes pages with surface-level information that can be found on dozens of other sites, content that restates obvious facts without adding insight, and pages that are padded with filler to hit arbitrary word counts.

Google's helpful content guidelines remain the benchmark. Content should demonstrate first-hand experience, provide substantial value, and leave the reader feeling they have learned something genuinely useful.

2. AI-Generated Spam at Scale

Google has been clear that using AI to generate content is not inherently against their guidelines. However, using AI to mass-produce low-quality content designed primarily to manipulate search rankings is a violation of their spam policies. The March 2025 update continues to refine Google's ability to identify and demote this type of content.

Sites that have published hundreds or thousands of AI-generated articles with minimal human oversight, little editorial quality control, and no genuine expertise behind the content are particularly at risk. The issue is not the tool used to create the content but the quality and intent behind it.

3. Manipulative Link Practices

Link-based ranking manipulation remains a focus. This includes purchased links, excessive link exchanges, and large-scale guest posting campaigns where the primary purpose is link acquisition rather than providing value to the host site's audience.

Google's spam policies documentation outlines what constitutes link spam. Natural editorial links earned through quality content remain one of Google's strongest ranking signals.

EEAT: The Framework That Matters Most

Experience, Expertise, Authoritativeness, and Trustworthiness (EEAT) is not a direct ranking factor in the algorithmic sense — Google has confirmed this. However, EEAT is the framework Google's quality raters use to evaluate search results, and the signals associated with EEAT are deeply woven into Google's ranking systems.

After every core update, the sites that tend to perform best are those that demonstrate:

• Experience: Content created by people who have direct, first-hand experience with the topic. A review written by someone who actually used the product. A guide written by someone who has done the work.
• Expertise: Content created by people with demonstrable knowledge. This is especially important for YMYL (Your Money or Your Life) topics such as health, finance, and legal advice.
• Authoritativeness: The site and its authors are recognised sources in their field. Other reputable sites link to and reference the content.
• Trustworthiness: The site is transparent about who is behind it, provides accurate information, and has clear contact details and editorial policies.

Practical Steps: What to Do After the March 2025 Core Update

Whether your site was negatively affected or not, these actions will strengthen your positioning for this and future updates:

1. Audit Your Content for Quality and Relevance

Go through your published content page by page. For each page, ask: does this provide genuine value that a reader cannot easily find elsewhere? If a page exists only to target a keyword and provides no unique insight, it is a liability. Consider improving it substantially, consolidating it with other related content, or removing it entirely.

2. Strengthen Author and Business Credentials

Ensure every piece of content has a clearly attributed author with a bio that establishes their relevant experience. Your business should have a comprehensive "About" page, clear contact information, and — for service-based businesses — case studies or portfolio items that demonstrate real-world results.

3. Improve Content Depth and Originality

The pages that perform best after core updates tend to be those that offer something competitors do not. This could be original research, proprietary data, unique perspectives from industry experience, detailed case studies, or expert interviews. Go beyond summarising what everyone else has already written.

4. Review Your Link Profile

If you have been engaged in aggressive link building practices — buying links, participating in link exchange schemes, or producing low-quality guest posts primarily for backlinks — now is the time to stop. Focus instead on earning links naturally by creating content that people genuinely want to reference and share.

5. Technical Foundations Still Matter

While content quality is the primary focus of core updates, technical SEO issues can compound the problem. Ensure your site loads quickly, is mobile-friendly, has a clean crawl structure, and does not present indexing issues. Use Google Search Console to identify and fix any crawl errors or indexing problems.

6. Monitor, But Do Not Panic

Core updates typically take up to two weeks to fully roll out. Rankings can fluctuate significantly during this period before settling. Do not make drastic changes to your site in the middle of a rollout. Instead, wait until the update is complete, assess the impact, and then plan your response methodically.

The Long View: Stop Chasing Algorithms

The most important takeaway from every Google core update is the same: stop trying to optimise for the algorithm and start optimising for your audience. Google's stated goal is to surface the content that best serves the searcher's intent. If you consistently create content that does that — content rooted in genuine experience and expertise — you will be on the right side of every future update.

This does not mean SEO best practices are irrelevant. Proper title tags, meta descriptions, internal linking, structured data, and technical performance all play important roles. But they work best when they support genuinely valuable content, not as a substitute for it.

The March 2025 core update is a reminder that shortcuts have a shelf life. Quality does not.