The Google Ranking Algorithm, And The Updates That Matter
Summarise this blog
Key Takeaways
- The Google algorithm is the set of rules and systems Google uses to rank web pages and decide which results a searcher sees, working through crawling, indexing and ranking.
- Google confirms broad core updates several times a year; since March 2024 there have been nine core updates and five spam updates, the latest being the August 2026 spam update.
- Two structural changes outweigh any single update: Interaction to Next Paint replaced First Input Delay in Core Web Vitals on 12 March 2024, and AI Overviews (May 2024) then AI Mode (May 2025) changed what a result looks like.
- Google’s three spam policies from March 2024, expired domain abuse, scaled content abuse and site reputation abuse, are the rules most likely to catch a marketing site.
- The only authoritative source for whether an update is running is Google’s Search Status Dashboard at status.search.google.com.
Nobody in online marketing is unfamiliar with SEO (search engine optimisation), pushing a site towards the top of search results by improving what is on the site and off it to meet Google’s criteria. Those criteria run to a number almost too large to count, and they change constantly, close to every quarter, which is why marketers and SEO people have to keep checking what has changed in how the Google algorithm works.
This article covers what the Google algorithm is, why online marketers have to take it seriously, and what has actually changed from 2024 to 2026.
Table of Contents
What Is Google’s Algorithm, And Why Does It Matter For A Website
The Google algorithm is the set of rules and methods Google uses to rank websites and show search results to users. It is the heart of the search engine, and it lets users find what they want quickly and accurately.
As the introduction said, effective SEO depends directly on following the criteria Google sets, and those criteria change more than once a year. What the algorithm rated well in the past may not survive the next update. Tracking changes to the Google algorithm therefore matters a great deal: following the current criteria gives a site a better chance of the top positions, and sticking to the old ones without updating can drop a site from the top to the bottom, or out of the results altogether.
What Are The Main Parts Of The Google Algorithm
The Google algorithm works in three main stages.
- Gathering information (crawling)
- Building the index of sites to be ranked (indexing)
- Ranking
Across those stages Google uses a program called Googlebot, or a spider, to find and gather information from websites worldwide, then analyses, organises and stores it in an enormous database, the index, so users can search it fast. When a user enters a keyword, the Google algorithm processes and ranks the sites whose content is most relevant to that keyword, weighing what is commonly described as more than 200 factors.
The Google Algorithm Updates That Marketers Cannot Miss, March 2024 To 2026
The Google algorithm holds more rules than even an SEO specialist can remember, but a few changes each year are the ones that matter. Here is the confirmed record from March 2024 to the present, drawn from Google’s own announcements and the Search Status Dashboard.
The March 2024 Core Update And Three New Spam Policies
The March 2024 core update was the largest of the year, aimed at cutting unhelpful content in results, and it arrived with three new spam policies that still govern what gets a site penalised: expired domain abuse (buying an old domain to trade on its reputation), scaled content abuse (mass-producing pages to manipulate rankings, however they are made), and site reputation abuse (publishing third-party content on a trusted site to borrow its authority). Google followed with core updates in August, November and December 2024, and a spam update in December 2024.
Interaction To Next Paint Joins Core Web Vitals
On 12 March 2024, Interaction to Next Paint (INP) replaced First Input Delay (FID) as the responsiveness metric in Core Web Vitals. Where FID measures only the first interaction on a page, INP samples every interaction, so a page that feels sluggish later in a session now scores accordingly. The other two vitals, Largest Contentful Paint and Cumulative Layout Shift, are unchanged.
Experience In E-E-A-T
Google added Experience to its quality-rater framework in December 2022, making it E-E-A-T: experience, expertise, authoritativeness and trustworthiness. The weight of first-hand experience has only grown since. A review of a product or service is expected to show the writer actually used it, to keep content that misleads users out of results.
AI Overviews And AI Mode
AI Overviews launched in the United States on 14 May 2024 and now reaches more than 2.5 billion users a month across over 200 countries. AI Mode, a full conversational search built on the same foundation, reached general availability on 20 May 2025 and expanded to more than 200 countries and territories from October 2025. Together they change what a result is: a synthesised answer with cited sources sits above the ten blue links, and being cited inside it is now a ranking goal in its own right.
The 2025 Core Updates
Google ran three broad core updates in 2025: March (13 to 27 March), June (30 June to 17 July) and December (11 to 29 December), plus a spam update from 26 August to 22 September. Each core update reweights the whole ranking system rather than targeting one signal, which is why a site can move without having changed anything.
2026 So Far, And The Latest Google Update
2026 opened with a Discover core update from 5 February, then a spam update on 24 March that finished inside a day, the March core update (27 March to 8 April), the May core update (21 May to 2 June), a June spam update (24 to 26 June), and the August spam update (18 to 21 August), which is the most recent confirmed ranking update as this article publishes. On Google’s usual cadence the next broad core update is due in the second half of the year. Check the Search Status Dashboard at status.search.google.com before attributing any ranking change to an update, because Google confirms them there and nowhere else.
Keeping Up, Or Handing It To An Agency
With the Google algorithm and its changes from 2024 to 2026 understood, it is these detailed, shifting factors that make algorithm SEO anything but easy, and why many brands turn to an SEO company rather than doing it themselves. For anyone who finds tracking every update a burden, Primal Digital Agency is ready to advise and help on every concern a brand has. We are a leading SEO agency in Thailand with more than 150 specialists ready to lift your site above its competitors. Our SEO service team is available today.
Frequently Asked Questions About The Google Algorithm (FAQs)
| Question | Answer |
|---|---|
| How often does Google update its algorithm? | Google makes thousands of small changes a year and confirms a handful of broad core updates, typically three or four, plus spam updates. Since March 2024 there have been nine core updates and five spam updates. Only the confirmed ones appear on Google’s Search Status Dashboard. |
| What is a Google core update? | A core update is a broad change to Google’s ranking systems that reassesses content across the whole web rather than targeting one signal or one type of site. Pages can rise or fall without having changed, because the update changes how existing signals are weighed. Google says there is no specific fix beyond improving content quality. |
| How do I know if my website was hit by a Google update? | Compare the date a drop began in Google Search Console against the rollout dates on Google’s Search Status Dashboard. A fall that starts inside a confirmed rollout window and holds after it finishes points to the update. A drop outside any window usually has another cause, such as a technical error or lost links. |
| How long does it take to recover from a Google core update? | Usually until the next core update, which is typically two to four months, because Google reassesses sites at that scale only when a core update runs. Improvements made in between are picked up then, and Google has said that large recoveries between updates are uncommon. |
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