Google's 2025 Algorithm Updates: What Actually Changed and How to Protect Your Rankings

If your website traffic dropped in 2025, or if you noticed certain pages climbing while others slipped, there's a good chance one of Google's several major algorithm updates was responsible. Google released more core updates in 2025 than in any recent year, and the cumulative effect has reshaped the search landscape in ways that matter to Perth service businesses.

The good news is that the pattern across all of these updates is consistent. Google isn't trying to be unpredictable. It has a clear direction, and once you understand it, protecting your rankings becomes a matter of building the kind of website Google has been pointing toward for years.

The Major Updates of 2025

The March Core Update targeted what Google calls "unhelpful content," meaning pages that exist primarily to rank rather than to genuinely answer a question or serve a reader. Sites that had grown by publishing large volumes of generic, thin articles saw significant drops. If your content strategy was "publish lots of pages covering every keyword variation," this update likely hurt.

The AI Overviews expansion, which rolled out progressively through mid-2025, changed how Google presents results for many informational searches. Instead of a list of ten blue links, users increasingly see an AI-generated summary at the top of the page. This has reduced clicks to informational content on some queries, though local and service-based searches remain largely unaffected for now. If your business relies on ranking for "how to" or "what is" queries, it's worth monitoring whether AI Overviews are appearing for your target terms and whether they're capturing the traffic you used to receive.

The August Spam Update targeted two specific problems: low-quality backlinks and thin content at scale. Sites with large numbers of links from irrelevant or low-quality sources saw penalties. Sites that had used AI to generate bulk content without genuine expertise or editing also took hits. This wasn't about AI content being penalised automatically; it was about content that lacked real substance regardless of how it was produced.

The November Core Update continued the theme, with particular emphasis on trust signals. Sites without clear author information, without verifiable expertise, and without signals that a real person or organisation was behind the content performed worse.

What E-E-A-T Means for Your Website

Google uses a framework called E-E-A-T to evaluate content quality: Experience, Expertise, Authoritativeness, and Trustworthiness. It sounds like jargon, but the practical meaning is straightforward.

Experience means the content reflects someone who has actually done the thing they're writing about. A plumber writing about common hot water system problems from having fixed hundreds of them is showing experience. A generic article regurgitating information found on other websites is not.

Expertise means demonstrated knowledge in the field. For a business website, this is partly about credentials and partly about the quality and depth of the content itself.

Authoritativeness is about your reputation beyond your own website. Do other credible sites reference you? Do you have reviews on Google, industry directories, or trade associations? Do local publications or community sites mention your business?

Trustworthiness is about signals that you are who you say you are: a real business, with a physical address, with identifiable people behind it, with a clear privacy policy and contact information, with consistent information across directories.

For most Perth service businesses, E-E-A-T is actually an advantage, because you have genuine local experience and a verifiable physical presence that content farms and generic national sites cannot replicate.

Who Got Hurt and Who Won

The businesses that suffered most from 2025's updates were those whose online presence was built around volume rather than quality. Content farms that published thousands of thin articles lost most of their traffic. National comparison sites with generic service pages and no real local knowledge dropped in local results. Businesses that had used AI to generate service pages without any human expertise or editing found those pages ranking significantly lower.

The businesses that improved their positions were those with clear signals of genuine expertise and local relevance. A Perth electrician with a detailed services page reflecting actual local projects, a Google Business Profile with dozens of real reviews, and consistent information across the major directories is exactly what Google's updates have been rewarding.

Local results in particular have become more dependent on proximity, genuine reviews, and local content. If you serve Perth's northern suburbs, content that specifically references those areas, the local context, and the kinds of jobs common in those communities outperforms generic national content for Perth users.

What to Do Right Now

Start with an honest audit of your existing pages. Look at your service pages and ask whether each one would genuinely help someone who landed on it with a real question. If a page is two paragraphs of generic text with keywords scattered through it, it needs rewriting with real information about how you work, what the process looks like, and what makes your approach different.

Add author information to any articles or blog posts on your site. A photo, a name, a brief bio, and ideally links to other places that confirm who this person is, all contribute to the trust signals Google is now weighing more heavily. For a business site, this might mean adding a team page and attributing content to the people who actually work there.

Build local content that reflects your actual service area. This doesn't mean stuffing suburb names into generic pages. It means writing about the specific types of jobs, common local problems, or local conditions that are relevant to what you do in Perth. A roofing business that writes about the impact of Perth's hot summers on specific roofing materials is producing locally relevant content. A plumber who writes about water pressure issues common in older Fremantle homes is doing the same.

Earn genuine reviews from real clients. Google's reviews are the most valuable, but Yelp, Facebook, and industry-specific directories also contribute to your authority signals. A consistent flow of honest reviews from real customers is one of the most durable SEO assets a local business can build.

Finally, check your backlink profile for anything low-quality. If your site has links from irrelevant directories, guest post farms, or sites that clearly exist only to host links, those are now liabilities rather than assets. A professional SEO audit can identify these and recommend either disavowing or removing them.

The through-line in everything Google did in 2025 is the same: reward businesses with real expertise, real local presence, and real reputations. If your website reflects what your business actually is, these updates are working in your favour.