Algorithm Updates & Core Updates
What a core update actually is, why your traffic moved, and how to respond. Core updates, spam updates and the difference between an algorithmic drop and a manual penalty.
Google confirms a handful of core updates a year, and every one of them moves the results. Some pages gain visibility, others lose it, and often neither has changed a thing. If you work seriously with SEO, an update is something to understand before it is something to react to. Pages that follow the search engines' guidelines and answer a question better than the alternatives tend to come out of an update stronger.
What a core update is
A core update is a broad adjustment to Google's ranking systems. It does not target an industry or a single site. It recalibrates how content is assessed across the whole web, the rollout usually runs over a couple of weeks, and Google announces the start and the finish in its own channels.
The important part: a drop after a core update is rarely a penalty. It usually means other pages are now judged to be better answers to the searches you used to win. Your competitors were rewarded, and that is a different problem to solve than cleaning up after a violation.
The direction of travel has been consistent for years. Core updates keep pushing towards demonstrable quality and E-E-A-T: experience, expertise, authoritativeness and trust. Google folded its helpful content system into the core ranking systems, so the assessment of whether content actually helps people now runs continuously instead of arriving as a separate update. Sites carrying large volumes of generic, machine-produced text with no human substance have felt that clearly, and several of the bigger core updates have sent exactly that kind of domain down.
Spam updates: the link spam example
Alongside core updates, Google runs targeted spam updates. They tune the systems that detect attempts to manipulate the results, and the link spam updates are the clearest example of how that works.
Links are one of the heaviest ranking factors, which is exactly why an industry grew up around buying and selling them. Google's link spam work, driven by the AI-based SpamBrain system, goes after paid links, affiliate links and sponsored guest posts that carry no proper attribution. The rule itself is simple: a link placed in exchange for money has to say so in the markup.
| rel attribute | When to use it |
|---|---|
rel="sponsored" | Any link placed because money changed hands, affiliate links included. |
rel="ugc" | User-generated content: comments, forum posts, anything published without editorial review. |
rel="nofollow" | The general opt-out, still valid. Links already tagged nofollow do not need retagging. |
Ignoring this rarely produces a dramatic punishment. Google usually neutralizes the unnatural links so they stop counting at all. But when your rankings were built on bought links, having the foundation quietly removed feels exactly like a penalty. The lesson holds across all link work: your links should not look earned, they should be earned. A link analysis shows you how solid your profile actually is.
Algorithmic drops and manual actions
There are two ways to lose visibility, and each needs its own response.
- Algorithmic drops happen automatically when the systems change. No warning, no message, the traffic simply moves. The work is to become better at what the winners are now doing better.
- Manual actions are issued by a person at Google who has judged that the site breaches the guidelines. They are rare and they are serious: you get a notice in Search Console, you fix the violation, and you request a review before visibility can return.
Telling the two apart is the first diagnostic step, and it takes a minute. Search Console reports manual actions explicitly. If there is nothing there, you are looking at a ranking change and not a sanction, which saves you from rebuilding content to solve a problem you do not have.
How to respond to an update
- Wait for the rollout to finish. Results swing while an update is still rolling, and decisions taken mid-rollout are built on noise. Give it a couple of weeks.
- Measure the scope. Compare the period after with the period before in Search Console and your analytics. Note which pages and which keywords moved, in both directions. The pages that gained tell you as much as the ones that lost.
- Look upwards. For your most important keywords: who sits at the top now, and what do they do better? More first-hand experience in the content, fuller coverage of the intent, stronger sources? What the winners have in common is your backlog.
- Split the work into three tracks. Content (rewrites, updates, E-E-A-T signals), links (profile and anchor distribution) and technical (crawling, speed, structure). A technical SEO audit covers the third track systematically.
- Take it URL by URL and keep measuring. Recovery after a large update is counted in months, and saying that out loud at the start is more useful than promising a turnaround in a fortnight.
Staying current without drowning
You do not need to follow every rumor in the SEO industry. Three sources go a long way: Google's Search Central blog, where updates are announced, the Google Search Status Dashboard, which reports the state of crawling, indexing and ranking systems, and continuous visibility tracking on your own domain, so you notice movement while it happens instead of when a colleague asks why you have become hard to find.
One last point, and it is the one worth keeping. The direction of the updates has been stable for a long time. Google increasingly rewards content with documented experience and expertise, and that is precisely the content AI surfaces like ChatGPT and AI Overviews choose to cite. Standing strong through updates and becoming visible in AI search turn out to be the same job.
If you want to know where you stand before the next update lands, a free SEO analysis is the natural place to start.
