What are Google algorithm updates?
Google algorithm updates are changes to the systems Google uses to find, assess and rank web pages. Google algorithm updates in Australia are one of the main reasons rankings on Google.com.au can shift overnight, even when nothing on your website has changed. Knowing which kind of update you are dealing with is the first step to responding sensibly rather than reacting in a panic.
Google makes thousands of smaller changes to Search each year, and most of them go unnoticed. A handful of larger updates are confirmed publicly, and those are the ones that tend to move rankings and traffic. This article is part of Glorvix news for Australian businesses: plain-English explanations of search changes and what they mean for your marketing.
Core updates
Core updates are broad changes to Google’s core ranking systems, released several times a year. They are designed to improve how Google assesses content overall, not to target particular sites, industries or countries. Google publishes guidance on what site owners should know about core updates, and the key message is simple: a drop after a core update doesn’t necessarily mean something is wrong with your site. It often means other pages are now judged more helpful for the same searches.
A core update typically takes up to about two weeks to roll out fully, and rankings can bounce around during that period.
Spam updates
Spam updates improve Google’s ability to detect content and behaviour that break its spam policies, such as link schemes, scaled low-value content, cloaking, expired domain abuse and site reputation abuse. Unlike a core update, a spam update is aimed at specific practices. If a spam update hits you, the fix is to remove whatever breaks the policies, and recovery can take months as Google’s systems re-evaluate the site.
Spam updates are separate from manual actions, which are applied by human reviewers and reported directly in Google Search Console.
Ranking system updates
Google’s guide to its ranking systems lists the individual systems that contribute to rankings, including systems for reviews, original content, freshness, passage ranking, site diversity, deduplication and link analysis. Some updates focus on a single system, such as reviews. Google has also said that its helpful content signals are now part of its core ranking systems rather than a separate update.
How the main types of Google update compare
| Update type | What it affects | How you find out | Typical response |
|---|---|---|---|
| Core update | Overall assessment of relevance and quality across all sites | Announced on the Search Status Dashboard | Wait for rollout to finish, then review content quality on the pages that lost ground |
| Spam update | Sites or pages that break Google’s spam policies | Announced on the Search Status Dashboard | Audit links and content against the spam policies and remove violations |
| Ranking system update | One type of content or signal, such as reviews | Usually announced, sometimes only in documentation | Improve the specific content type affected |
| Unconfirmed changes | Small tweaks happening all the time | Volatility trackers and your own data | Monitor; act only on clear, sustained patterns |
| Search feature changes | Layout, AI-powered answers, local packs and other SERP features | Visible in search results and click-through rates | Adjust titles, content format and tracking; rankings may not have changed |
How Google algorithm updates affect Google.com.au and local results
Google algorithm updates in Australia use the same underlying systems as updates everywhere else. Confirmed updates usually roll out globally, across languages and countries, at the same time. What differs is the environment those systems work in.
Why Australian results can move differently
- A smaller competitive pool. In many Australian niches there are fewer strong pages competing for each search, so when Google reassesses a few of them, the movement can look dramatic.
- Mixed international competition. US and UK pages often compete for Australian informational searches. An update that changes how Google weighs local relevance can push them up or down against Australian sites.
- Local intent. Many Australian searches, from “plumber” to “accountant”, carry an implied location. Local results depend heavily on where the searcher is, so a business can rank well in one suburb and poorly a few kilometres away.
- Timing. Google usually announces updates on US time, so in Australia a rollout often appears to start overnight or the following morning.
Local pack and Google Maps rankings
Local results in the map pack and Google Maps are shaped mainly by relevance, distance and prominence, as Google’s Business Profile help pages explain. Core updates mostly affect the organic results beneath the map pack, while local rankings can shift on their own schedule. That is why an Australian tradie or clinic can see stable map rankings during a core update, or the opposite: organic traffic holds steady while enquiries from Google Maps fall.
Search feature changes that look like updates
Not every traffic drop is a ranking change. New search features, including AI-powered overviews, larger ads or extra “People also ask” boxes, can reduce clicks even when your position hasn’t moved. Always check average position alongside clicks before concluding that an algorithm update hit you.
How to tell whether a Google update affected your site
Before changing anything, work out whether an update is really the cause. Follow these steps in order:
- Check the Google Search Status Dashboard. It lists confirmed ranking updates with their start and finish, plus any crawling, indexing or serving incidents.
- Wait for the rollout to finish. Give it at least a week after completion before comparing data, so you are not analysing a moving target.
- Compare equivalent periods in Search Console. In the Performance report, compare the weeks after the update with the same number of weeks before, matching days of the week.
- Filter by country. Set the country filter to Australia. If you also serve other countries, compare them separately, because an update can affect each market differently.
- Separate demand from rankings. If impressions fell but average position is steady, demand or seasonality is the likely cause. If position fell, rankings changed.
- Look for patterns by page and query. Group losses by page type, such as service pages, location pages, blog posts or product categories. An update rarely hits every page equally.
- Rule out technical problems. Check the page indexing report, recent deployments, robots.txt, redirects and whether your tracking is firing correctly. A broken site or tag can look exactly like an update.
- Check who gained. Search your key terms and note which sites moved up. Their pages often reveal what Google now prefers for those searches.
Annotate your analytics
The single most useful habit for diagnosing updates is a change log. Record the date of every website release, content launch, redirect change, campaign and confirmed Google update, and add the same dates as annotations in your analytics or reporting dashboard. When traffic moves, you can see at a glance whether it lines up with something you did or something Google did.
If a drop lines up with a redesign or new website rather than an update, work through our SEO website migration checklist instead, because migration problems need very different fixes.
What to do after a Google update, and what not to do
A clear head matters more than speed. Most of the damage we see after updates comes from rushed reactions, not from the update itself.
What to do
- Diagnose before you act. Use the steps above to find which pages and queries lost ground.
- Review affected pages honestly. Compare them with the pages now outranking you. Are yours as complete, current, trustworthy and easy to use?
- Improve content that deserves it. Update outdated information, add first-hand experience and expert input, answer the questions searchers actually ask and remove filler.
- Consolidate overlapping pages. Several thin pages targeting the same topic can compete with each other. Merging them into one strong page often helps.
- Fix technical issues. Slow pages, crawl problems and indexing errors limit how well any content can perform. Our technical SEO team can find and prioritise them.
- Keep building authority. Earn genuine mentions and links from Australian industry bodies, suppliers, local media and partners.
- Measure over months, not days. Improvements can take time to be reflected in rankings.
What not to do
- Don’t make sweeping sitewide changes in the middle of a rollout, while results are still moving.
- Don’t mass-delete content because traffic dipped. Improve or consolidate first, and remove only pages with no value to anyone.
- Don’t buy links or “update-proof” packages. Anyone promising guaranteed recovery or insider knowledge of the algorithm is selling risk.
- Don’t change URLs or rebrand in reaction to an update. You would add migration risk on top of an existing drop.
- Don’t rely on volatility trackers alone. They show that the search results are moving, not why your site moved.
- Don’t assume every drop is an update. Seasonality, tracking errors, competitors and site changes are just as common causes.
Google is also clear that recovery isn’t guaranteed. Improvements may be recognised over time, and in some cases the biggest change comes with a later core update. If competing pages are genuinely more helpful, the aim is to become the better result, not to wait for rankings to return on their own.
Helpful content and E-E-A-T: what they mean for Australian businesses
Google’s guidance on creating helpful, reliable, people-first content is the best reference for what its ranking systems aim to reward. It includes self-assessment questions about originality, expertise, presentation and whether the content leaves readers satisfied.
E-E-A-T stands for experience, expertise, authoritativeness and trustworthiness. It comes from the guidelines Google’s search quality raters use to evaluate results. Raters don’t change rankings directly, and E-E-A-T isn’t a single ranking factor, but Google’s systems use a mix of signals to identify content that shows these qualities. Trust is the most important of the four, and the bar is higher for topics that affect people’s health, finances or safety.
For an Australian small or medium business, demonstrating E-E-A-T is usually practical rather than technical:
- Show real experience. Use your own photos, project examples and details that only someone who does the work would know.
- Write for Australians. Use Australian spelling, prices in AUD with GST stated clearly, and references to Australian standards, regulations and places where they are relevant.
- Make it clear who is behind the site. Include an about page, author details for advice content, your ABN and easy-to-find contact details.
- Keep content current. Review key pages regularly and update pricing, services and advice when they change.
- Earn trust off-site. Genuine reviews, industry memberships and mentions from reputable Australian organisations all support your credibility.
If your content needs work, our content writing team writes and refreshes pages with these principles built in.
Local SEO resilience for Australian small businesses
The businesses that ride out Google algorithm updates in Australia best tend to have strong fundamentals rather than clever tactics. For local businesses in Australia, that means:
- A complete Google Business Profile. Choose accurate primary and secondary categories, set your service areas, keep opening hours current (including public holidays), add real photos and respond to reviews.
- Genuine reviews only. Ask happy customers for honest reviews and reply to them. Fake or incentivised reviews breach Google’s policies and can also mislead consumers under Australian Consumer Law.
- Consistent business details. Keep your business name, address and phone number identical across your website, profile and directory listings.
- Useful location pages, not doorway pages. Create pages only for areas you genuinely serve, each with genuinely local detail such as projects, service coverage and local questions. Near-identical pages that swap the suburb name risk breaching Google’s spam policies.
- Local links and mentions. Sponsorships, local media coverage, supplier listings and business association memberships build prominence.
- A fast, mobile-friendly site. Many local searches happen on phones, often on the go, so slow pages cost enquiries.
- More than one channel. Email lists, Google Ads and social media reduce your dependence on organic rankings during a volatile rollout.
Competition differs sharply between markets. A business targeting inner-city Sydney faces a very different map pack from one serving a regional town, which is why our work with businesses in Sydney and Melbourne always starts with local competitor research.
Google algorithm update monitoring checklist for Australian businesses
Use this checklist to stay on top of Google algorithm updates without letting them take over your week.
Every week
- Check the Search Status Dashboard for new or completed updates.
- Review Search Console clicks, impressions and average position, filtered to Australia.
- Check Google Business Profile performance for calls, direction requests and website clicks.
- Log any website changes, campaigns or updates in your change log.
Every month
- Compare organic traffic and conversions by landing page with the previous month and the same period last year.
- Review your top pages for outdated content and add them to a refresh list.
- Crawl the site for technical issues, broken links and indexing problems.
- Check Core Web Vitals and mobile page speed for your key templates.
- Review new reviews and respond to every one.
When an update is confirmed
- Annotate the start date in your analytics and reporting dashboard.
- Hold off on major changes until the rollout is complete.
- One week after it finishes, compare before and after data by page and query.
- Write a short summary of what moved, what didn’t and what you will do next.
- Prioritise improvements on the pages with the biggest commercial impact.
How Glorvix keeps Australian clients informed
Google algorithm updates are part of our everyday work, and keeping clients calm and informed is part of the job. For Australian clients we:
- Monitor confirmed updates on the Search Status Dashboard and annotate them in every client’s reporting dashboard.
- Analyse the impact site by site once a rollout has finished, using Search Console data filtered to Australia and grouped by page type.
- Explain it in plain English in your monthly report and strategy call: what changed, whether it affected you and what we recommend.
- Act on real evidence, prioritising content, technical and local improvements by business impact rather than reacting to headlines.
We publish Glorvix news and guides for Australian businesses on the Glorvix blog, and you can see how we work with clients across the country on our Glorvix.com Australia page.
Worried an update has affected your rankings? Contact our team for a free SEO audit. We will review your Google.com.au visibility, check whether an update or a site issue is the real cause and show you the priorities for recovery.