Google’s latest core update for June 2025 is officially done—and while some in the SEO community are calling it a big one, it didn’t feel disruptive. Rankings shifted, sure, but it wasn’t the kind of chaos we’ve seen in past updates. That makes us think the changes were more behind-the-scenes than in-your-face. So what really happened?
Turns out, two major developments on Google’s backend might explain what’s going on.
Two Major Search Breakthroughs You Should Know About
A lot of people are linking the update to MUVERA—but that’s only part of the story. Alongside MUVERA, Google also introduced something called the Graph Foundation Model (GFM). Together, these two updates may have quietly redefined how search results are chosen and ranked.
What’s MUVERA?
MUVERA stands for Multi-Vector via Fixed Dimensional Encodings. Sounds technical—and it is—but here’s the plain-English version:
It’s a smarter, more efficient way for Google to retrieve and rank web pages. Traditional systems might pull in tons of pages that are only loosely related to your search. MUVERA sharpens that by narrowing the field—fewer, but more relevant pages make the cut. That means more precise search results and less noise.
One of the biggest perks of MUVERA is that it keeps all the accuracy of a complex multi-vector system, without the heavy processing load. It’s leaner, faster, and—according to Google’s own research—can pull 5 to 20 times fewer pages while still improving recall (i.e., finding what matters most). Even better, it takes up less memory and runs faster using Google’s existing systems.
And What’s the Graph Foundation Model?
This is the really futuristic part. Google’s new Graph Foundation Model (GFM) is like a large language model—but for relationships.
Instead of just reading content, it understands how things are connected: pages, links, users, reviews, spam patterns, you name it. Traditional graph neural networks (GNNs) were limited to the data they were trained on. But GFM isn’t. It can adapt to brand-new types of connections or datasets—just like how ChatGPT can answer questions on topics it hasn’t seen word-for-word.
Google has already been using GFM in real-world applications like spam detection in ads, and the results are impressive. In some internal tests, it improved accuracy by 3 to 40 times compared to older methods. That’s a huge jump, especially at Google’s scale.
So What Actually Changed in This Core Update?
While Google didn’t spell everything out, we can make an educated guess: this update likely brought MUVERA and GFM into the search pipeline in a bigger way.
MUVERA makes it easier to surface more relevant pages. GFM helps Google understand how content is connected, and potentially, how trustworthy or authoritative it is.
That would align with what Google officially said:
“This is a regular update designed to better surface relevant, satisfying content for searchers from all types of sites.”
The lack of widespread panic in the SEO world suggests the update didn’t hit like a wrecking ball. Instead, it may have focused on fine-tuning what’s already there—more subtle changes that make search better for everyone, without turning the results upside down.
At a recent event, Google’s Danny Sullivan mentioned upcoming efforts to show a wider variety of high-quality content. That also fits with what we’re seeing now. Some sites previously hit by the Helpful Content Update (HCU) have bounced back, while others have dropped—suggesting a recalibration more than a total overhaul.
Search expert Glenn Gabe shared that he saw some strong movement, but the broader SEO community didn’t seem to feel a huge shift. That tells us this may have been a big update in terms of impact, but not a disruptive one.
Final Takeaway
While this update may not have caused dramatic swings, it likely marks a quiet but important evolution in how Google ranks content. With smarter retrieval from MUVERA and deeper understanding through GFM, Google seems to be doubling down on relevance, quality, and trust—without rocking the boat too hard.
If you’re publishing genuinely helpful, high-quality content, you’re probably on the right side of these changes. But if your site’s rankings have shifted, now’s a good time to take a closer look at your content’s relevance and how it connects within your niche. These two new systems may just be the beginning of a more intelligent, relationship-aware search future.
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