April 2025 continued the trend of significant changes in the search landscape. Whilst Google didn’t announce another core update (the March one had only just finished, after all), we saw persistent ranking volatility, some eye-opening research on AI Overviews’ impact on organic traffic, and important updates to how Google evaluates AI-generated content.
Let me walk you through everything that happened and what it means for your website.
Unexplained Ranking Volatility Returns
Just when we thought things might settle down after the March core update completed on the 27th, the volatility continued. Multiple SEO tracking tools, including SEMrush, Mozcast, SimilarWeb, and Sistrix, reported notable surges in volatility on several occasions throughout April.
The main spikes occurred on:
- 9th April
- 16th April
- 22nd and 23rd April
- 25th April (particularly significant)
The 25th April spike was especially concerning for many webmasters, with some reporting traffic drops of up to 70%, particularly affecting Google Discover traffic. Others observed their websites disappearing from search results entirely or experiencing erratic visibility.
Here’s the frustrating part: despite these repeated shifts and widespread reports from the SEO community, Google did not officially confirm any updates beyond the Google March 2025 core update. This has become an increasingly common pattern; significant ranking changes are occurring without official acknowledgement from Google.
What this means for you: There have always been small tweaks to the algorithm but it seems that we’re now in an era of more impactful constant algorithm adjustments. Google is continuously testing and refining its systems, and not every change gets announced. This makes it even more important to focus on long-term fundamentals rather than chasing quick wins. If you saw ranking fluctuations in April, monitor the situation but don’t make hasty changes. Track your performance over weeks and months, not days.
The Impact of AI Overviews on Organic Traffic
April brought us perhaps the most concerning research yet on how AI Overviews are affecting organic search traffic. A study by Ahrefs analysed 300,000 keywords and found that when an AI Overview is present in search results, the click-through rate for top-ranking pages drops by an average of 34.5%.
Let me put that in perspective: if you’re ranking #1 and getting 100 clicks per day, the appearance of an AI Overview could reduce that to around 65 clicks. That’s a massive impact.
The research also revealed that approximately 30% of users now rely on AI summaries to answer their queries without clicking through to any website at all. These are what we’re calling “zero-click searches” – the user gets their answer from Google and never visits a site.
Adding to the concern, AI Overviews increasingly link to Google’s own services or products, raising questions about impartiality and whether Google is favouring its own properties in these AI-generated summaries.
What this means for you: This is arguably the biggest challenge facing SEO in 2025. You need a multi-pronged strategy:
- Optimise to be cited in AI Overviews. If users aren’t clicking through, at least get your brand mentioned as an authoritative source. Use structured data, create clear and concise answers, and demonstrate expertise.
- Target featured snippet-style content. Summarise answers at the top of your pages. Use FAQ and HowTo schema markup to increase your chances of being included.
- Focus on niche, long-tail queries where AI Overviews are less dominant.
- Diversify your traffic sources. Email marketing, social media, direct traffic through brand building; you can’t rely solely on organic search anymore.
Google Quality Raters Now Explicitly Assess AI Content
During Google’s Search Central Live event in Madrid, John Mueller confirmed something significant: quality raters are now being directly asked to assess whether content is AI-generated.
Content that appears to be fully automated with little or no human effort to modify it and add value may now earn itself a “lowest” rating from Google. This is the worst possible quality score in Google’s assessment framework.
The updated guidelines emphasise that whilst using AI tools is permitted, the resulting content must demonstrate Experience, Expertise, Authoritativeness, and Trust (E-E-A-T). Unedited AI content that lacks human oversight will be rated as low quality.
What this means for you: If you’re using AI to create content (and let’s be honest, most of us are experimenting with it), you must add substantial human input. This means:
- Editing and rewriting AI-generated text
- Adding your own expertise and unique insights
- Fact-checking everything thoroughly
- Ensuring the content demonstrates real experience
- Making it clear why you’re qualified to write about the topic
Think of AI as a research assistant or first-draft generator, not a replacement for human expertise and editorial oversight.
Search Console Gets Merchant Opportunities Report
For e-commerce sites, April brought a useful new feature. Google rolled out the Merchant Opportunities report in Search Console for merchants connected via Google Merchant Center.
This report provides practical suggestions to improve product listings, such as adding shipping information, store ratings, or payment options. It’s essentially Google telling you exactly what you could do to improve your product visibility in search results.
What this means for you: If you run an e-commerce site, connect your Google Merchant Center account to Search Console if you haven’t already. Then regularly check the Merchant Opportunities report and implement the suggestions. This is low-hanging fruit – Google is literally telling you what to fix.
Deep Pages Getting Cited in AI Overviews
Interesting research from BrightEdge analysed millions of URLs cited by AI Overviews and found something surprising: 82.5% of citations were to “deep” pages (pages that are two or more clicks away from the homepage).
This challenges the traditional assumption that homepages and top-level category pages are the most important. In the age of AI Overviews, it’s your detailed, specific content that’s getting cited and recognised as authoritative.
Furthermore, 86% of citations appeared for a single keyword, often with high search volume. This means every page on your site now has the potential to be a key entry point through AI Overviews.
What this means for you: Don’t just optimise your homepage and main category pages. Every page matters now. Ensure all your content is:
- Crawlable and indexable
- Consistently updated and maintained
- Comprehensive and authoritative on its specific topic
- Using appropriate structured data
Your detailed product pages, service descriptions, and in-depth guides are increasingly valuable in getting visibility through AI citations.
Google’s Transparency on SERP Features
At the Search Central Live event, Google made a remarkably candid admission: they’re testing more in-SERP features than ever before, with approximately 48% of them designed to keep users on Google rather than sending them to publisher sites.
They also warned that past success in search can no longer guarantee future success, and that traffic patterns are likely to fluctuate at an accelerated rate going forward.
This level of transparency is unusual for Google, and it confirms what many publishers and SEOs have been seeing in their data: organic click-through rates are declining, and Google is becoming more of an answer engine than a search engine.
What this means for you: Adjust your expectations and strategy. The days of steadily growing organic traffic year-over-year may be behind us for many sites. Focus on:
- Building brand recognition so users seek you out directly
- Creating content that requires a click-through (can’t be fully answered in a snippet)
- Optimising for the SERP features that do exist
- Developing non-search traffic channels
Schema Markup Matters for LLMs
Microsoft confirmed in late March (reported widely in April) that schema markup helps its large language models understand content. Bing’s Copilot uses structured data to comprehend website content better, particularly when combined with fresh content and IndexNow (Bing’s rapid indexing protocol).
This reinforces what many of us have been saying: structured data isn’t just about rich snippets anymore. It’s about helping AI systems understand and potentially cite your content.
What this means for you: If you haven’t implemented schema markup on your site, now is the time. Focus on:
- FAQ schema for common questions
- HowTo schema for instructional content
- Article schema for blog posts and news
- Local Business schema for local companies
- Product schema for e-commerce
There are excellent WordPress plugins like SEOPress that make adding structured data straightforward, even if you’re not technical.
Google Discover Coming to Desktop
There were hints in Search Console code that Google Discover – currently primarily a mobile feature—may be rolling out to desktop. Data filters for desktop Discover performance started appearing in some Search Console accounts.
Google Discover is that personalised feed of content recommendations you see on mobile devices. If it comes to desktop, it could represent a new traffic opportunity for publishers and content creators.
What this means for you: Keep an eye on your Search Console for Discover data. If you’re not already optimising for Discover, consider:
- Using high-quality images,
- Creating engaging, fresh content,
- Focusing on topics with genuine user interest (not just search volume),
- Ensuring your content is mobile-friendly (even if Discover comes to desktop, mobile optimisation still matters).
Googlebot IP Ranges Update Faster
Google’s Gary Illyes announced that Googlebot’s JSON file containing IP address ranges changed from weekly updates to daily updates. This technical change was made based on feedback from large network operators.
For most site owners, this is a minor technical detail, but it matters for website security and ensuring legitimate search engine bots are correctly identified.
What this means for you: If you use the Googlebot IP ranges JSON file for security purposes, you may need to update your systems to check it daily rather than weekly. For most small business websites, this won’t affect you directly.
The Big Picture: Quality and User Value Are Non-Negotiable
April 2025 reinforced several critical themes:
- AI Overviews are significantly impacting organic traffic. The 34.5% drop in CTR when they appear is substantial. You must adapt your strategy.
- Quality signals are being enforced more strictly. From AI content detection to programmatic page penalties, Google is getting better at identifying and demoting low-effort content.
- Deep, specific content is valuable. Generic overview pages are struggling. Detailed, authoritative content on specific topics is what gets cited and ranked.
- Structured data matters more than ever. It helps both traditional search and AI systems understand your content.
- Diversification is essential. Relying solely on organic search is increasingly risky. Build multiple traffic channels.
What You Should Do Now
Based on everything that happened in April, here are concrete actions to take:
For all websites:
- Audit your content for quality; remove or improve thin, low-value pages,
- Implement comprehensive structured data markup,
- Ensure every page on your site is well-optimised, not just your homepage,
- Monitor your AI Overview visibility where possible.
For e-commerce sites:
- Connect Google Merchant Center to Search Console,
- Review and implement Merchant Opportunities recommendations,
- Ensure all product data is complete and accurate.
For content sites:
- Review where AI Overviews appear for your target keywords,
- Create content that can’t be fully answered in a summary,
- Focus on demonstrating unique expertise and experience,
- Implement FAQ and HowTo schema where relevant.
For local businesses:
- Keep your Google Business Profile updated and active,
- Create deep, location-specific content beyond basic location pages,
- Consider geotagging your photos,
- Build citations and reviews to establish authority.
Need Help Adapting to These Changes?
April’s developments made it clear that SEO in 2025 now requires a more sophisticated, multi-faceted approach. The days of simply targeting keywords and building links are well behind us. You need to think about AI visibility, structured data, content quality, user experience, and multiple traffic channels simultaneously.
If you’re a local business in Farnborough, Hampshire, or the surrounding areas and you’re concerned about how these changes are affecting your website, or if you simply want to ensure you’re ready for what’s coming next, I’m here to help.
Whether you need a technical SEO audit, content strategy development, or ongoing SEO management, give me a ring on 01252 692 765 or drop me a message through my contact form.
The search landscape is more complex than ever, but with the right strategy and expert guidance, your business can still thrive online.
Paul Mackenzie-Ross is an SEO consultant based in Farnborough, Hampshire, specialising in helping local businesses improve their online visibility and attract more customers through search engines and new AI tools.