A History of Google Algorithm Updates and How We Handle Them At Trellis
If you work in SEO long enough, you learn to recognize a particular kind of headline:
“Google Just Released a Major Algorithm Update.”
That is usually followed by a few days – or weeks – of rankings bouncing around, SEO professionals comparing notes, and business owners wondering whether something is wrong with their website.
Google changes its search systems constantly. Most changes are small enough that nobody notices them. Several times a year, however, Google rolls out broader core updates that can significantly reshuffle search results.
It is also important to understand that not every type of business is affected equally.
Large publishers, ecommerce websites, affiliate sites, national lead-generation sites and businesses competing for high-volume organic keywords often experience the most obvious volatility. A website ranking for thousands of keywords gives Google plenty of opportunities to reassess where its pages belong.
For many small and local businesses, the impact is often less dramatic, particularly in the Local Map Pack.
Local search relies heavily on factors like relevance, distance and prominence. So while an organic algorithm update might dramatically rearrange websites ranking for a broad national search, the businesses appearing in the Map Pack for someone searching “plumber near me” may barely move.
That does not mean local businesses are immune. Website authority, links, content quality and organic visibility can still contribute to local performance, and Google has released updates over the years that specifically affected local search.
It simply means that when the SEO industry appears to be melting down over an algorithm update, your local business website may not require an emergency response.
How We Respond to Google Updates at Trellis
Our first reaction to most major updates is to wait – not panic (though we usually want to panic).
Algorithm updates can take days or weeks to fully roll out, and rankings frequently fluctuate while that happens. Making major changes to a website based on two or three days of data can create more problems than it solves.
Once things begin settling down, our process generally looks like this:
Evaluate Our Sites
We look across the websites we manage in different industries and markets. Who gained? Who lost? Which types of pages moved?
Watch Our Test Sites
We maintain websites specifically for SEO experimentation. They help us test theories without experimenting recklessly on a client's primary website.
Study the Experts
We follow SEO professionals who analyze algorithm changes and perform update recoveries for a living, comparing their findings against what we're seeing ourselves. Glenn Gabe and Lily Ray are two we pay close attention to (shoutout, we love you guys).
Build a Hypothesis
We want a reason behind every recommendation—not simply, “rankings dropped, so let's rewrite everything.” So we start with a clear hypothesis and try to control as many variabls as we can.
Test + Measure
We make thoughtful changes, measure what happens and continue refining. It's tough to control in order to run perfect experiments, but we try our best. And we keep testing. SEO is never really finished.
The Updates That Changed Search
Google has made thousands of changes over the years. These are some of the major updates that fundamentally changed the way SEO works.
Florida
One of Google's first truly disruptive algorithm updates. Florida dramatically reduced rankings for websites relying on obvious early SEO tactics such as keyword stuffing and excessive optimization.
Florida marked the beginning of Google's long-running effort to separate websites that genuinely deserved visibility from websites engineered primarily to manipulate rankings.
Jagger & Big Daddy
These updates improved Google's ability to evaluate backlinks, duplicate content and website architecture. Big Daddy also represented a major infrastructure change in how Google crawled and indexed sites.
Technical SEO and the quality of links increasingly mattered—not simply how many links a website could acquire.
Vince
Google began showing a stronger preference for recognizable, trusted brands for certain competitive searches.
SEO became increasingly connected to real-world authority. Building a recognizable, trusted business became harder to separate from building a website Google trusted.
Caffeine
Caffeine rebuilt much of Google's indexing infrastructure, allowing Google to discover and process new and updated content much faster.
Search became significantly more real-time. New content could enter Google's index much faster than before.
Panda
Panda targeted low-quality, thin, duplicate and mass-produced content, particularly the enormous “content farms” built primarily to capture organic search traffic.
This was one of the biggest moments in SEO history. Google became far better at evaluating overall content quality—not simply whether a page contained the correct keywords.
Penguin
Penguin targeted manipulative link-building practices, including paid links, link networks and highly unnatural anchor-text patterns.
The era of “more backlinks equals better rankings” began ending. Link quality, relevance and legitimacy became increasingly important.
Venice
Venice began incorporating a searcher's geographic location more aggressively into traditional organic search results.
Local SEO moved closer to the center of Google Search. Businesses could increasingly rank differently depending on where the person searching was physically located.
Hummingbird
Hummingbird represented a major rewrite of Google's ranking technology focused on understanding the meaning and intent behind searches instead of simply matching individual keywords.
SEO increasingly became about answering topics, needs and questions instead of repeating an exact keyword throughout a page.
Pigeon
Pigeon significantly changed local search, tying Google's traditional organic ranking signals more closely to Maps and local results while improving its understanding of location and distance.
Strong websites became increasingly important to strong local SEO. Pigeon helped build the foundation for the modern local search ecosystem.
Mobilegeddon
Google began giving mobile-friendly websites a ranking advantage in mobile search.
Mobile optimization went from “nice to have” to essential. Designing a website primarily around desktop users quickly became outdated.
RankBrain
RankBrain brought machine learning more deeply into Google's ranking systems, helping it interpret unfamiliar searches and better understand relationships between words and concepts.
Search became increasingly driven by intent and machine learning rather than straightforward keyword matching.
Possum
Possum significantly altered local results, particularly how Google filtered nearby businesses and how rankings changed based on the searcher's physical location.
Local rankings became increasingly hyperlocal. Two people several miles apart could perform the exact same search and receive different Map Pack results.
Fred
“Fred” was an unofficial name given to an update that appeared to disproportionately affect websites filled with thin content primarily designed to generate advertising or affiliate revenue.
Creating content solely to capture traffic and monetize the visitor became an increasingly risky strategy.
The “Medic” Update
A major core update heavily affected health, medical, financial and other websites where inaccurate information could significantly affect someone's life.
The SEO industry became increasingly focused on expertise, authority and trust—especially for so-called YMYL (“Your Money or Your Life”) topics.
BERT
BERT improved Google's natural-language processing, allowing it to better understand context and subtle relationships between words within searches.
Google became significantly better at understanding natural human language. Writing awkwardly around exact-match keywords became even less necessary.
Product Reviews Updates
Google began specifically rewarding detailed product reviews demonstrating original research, expertise and firsthand knowledge instead of generic summaries assembled from information available elsewhere.
Firsthand experience became increasingly valuable, foreshadowing Google's broader emphasis on genuinely useful and original content.
Core Web Vitals & Page Experience
Google formally incorporated page-experience measurements such as loading performance, visual stability and responsiveness into its ranking considerations.
Technical website performance became easier to measure and harder to ignore, although excellent performance alone was never a substitute for strong content and authority.
Helpful Content Update
Google introduced a system specifically intended to reduce visibility for websites producing large quantities of content primarily to attract search-engine traffic rather than genuinely help people.
This became one of the defining themes of modern SEO: people-first content. The system was eventually incorporated more deeply into Google's core ranking systems.
September Helpful Content Update
A particularly significant Helpful Content update created substantial gains and losses across publishers, review sites and content-heavy websites.
It reinforced the idea that quality can extend beyond a single page. Publishing large volumes of mediocre content can create problems that cannot always be fixed by improving only one article.
March Core Update
One of Google's largest and most complex updates combined changes across multiple ranking systems while incorporating helpful-content signals more directly into Google's core systems.
Google also introduced stronger spam policies targeting scaled content abuse, expired-domain abuse and site-reputation abuse.
The dividing line became increasingly clear between publishing something because it is genuinely useful and manufacturing content simply because keyword research says traffic exists.
The Era of Continuous Core Updates
At this point, assigning a catchy animal name to every Google change is no longer particularly useful.
Google now rolls out broad core updates multiple times a year while smaller ranking-system changes happen continuously in the background. Spam systems, machine learning and AI-driven search systems continue to evolve alongside them.
SEO is becoming less about reacting to individual updates and more about building websites that continue to deserve visibility regardless of the next update.
What Hasn't Changed
Looking across more than two decades of Google updates, there is a surprisingly consistent pattern. Google has and is getting better and better at identifying shortcuts. I (Brooks here) can say firsthand that some of the stuff I did on personal sites back in 2015 does not work anymore –and for good reason!
Today, AI makes producing enormous amounts of average content easier than ever. That means Google's incentive to distinguish between information that merely exists and information that actually deserves to rank has never been stronger. It seems like that's what they're most focused on at the moment. We'll keep adding to this list as updates occur – though as mentioned above, it's happening super frequently at the moment!