# What is SEO? How search engine optimization works and why it matters

> SEO is the work of helping search engines crawl, index and rank your pages, and searchers choose them. How it works, its parts, timelines and costs.

- URL: https://computese.com/what-is-seo/
- Author: Duong Quan Nguyen, CEO, Computese
- Published: 2024-06-07
- Updated: 2026-09-25
- Topics: SEO

## In short
- SEO (search engine optimization) is the work of helping search engines crawl, index and understand your pages, and helping searchers choose your result, so you earn unpaid visits from Google, Bing and the AI answers built on them.
- Search works in three steps: crawl, index, rank. A page that is not crawled and indexed cannot rank, so technical access comes first, then content that matches search intent, then links and reputation.
- Organic placement cannot be bought. Google says it costs nothing to appear in organic results and that it never accepts money to rank a site; the cost of SEO is the work. Search ads, by contrast, are paid for click by click.
- Google says some changes show within hours and others take several months, and suggests waiting a few weeks before judging one. Nobody can guarantee a first-place ranking.
- AI Overviews, AI Mode and Copilot draw on the same crawl and index as classic search, so there is no separate AI checklist: Google calls AEO and GEO work SEO.

SEO (search engine optimization) is the work of making a website easy for search engines to crawl, index and understand, and making its results worth clicking, so it earns unpaid visits from people searching on Google, Bing and the AI answers built on them. You optimize your site for search engines, not the engines themselves.

This article is the starting point of our SEO fundamentals series. It explains how search engines work, the six parts of SEO and what each involves, why SEO matters to a business, and what Google itself says about how long it takes and what it costs. When you are ready to act, the [SEO improvement process](https://computese.com/how-to-improve-seo-a-comprehensive-guide/) and the [14-point SEO checklist](https://computese.com/seo-tips-for-websites-boost-your-online-presence/) take over, and small businesses can follow a [90-day SEO plan](https://computese.com/mastering-seo-for-small-business-websites/).

## What SEO means

Google's [SEO Starter Guide](https://developers.google.com/search/docs/fundamentals/seo-starter-guide) defines SEO in two halves: helping search engines understand your content, and helping people find your site and decide whether to visit it from a search. Both halves matter. A page the search engine cannot read never appears, and a page that appears but does not look like the answer never gets the click.

SEO is about **organic results**, the unpaid listings the search engine orders by its own ranking systems. Ads sit beside them, [labelled "Sponsored" or "Ad"](https://www.google.com/search/howsearchworks/how-search-works/ranking-results/), and Google says advertisers get no ranking advantage for them. Buying those ads is paid search (often called PPC or SEM), a separate channel that [SEO vs SEM](https://computese.com/seo-vs-sem/) compares in detail.

SEO is not only about Google. Microsoft's [Bing Webmaster Guidelines](https://www.bing.com/webmasters/help/webmaster-guidelines-30fba23a) describe SEO as improving a site's technical quality, clarity and accessibility so that Bing can discover, understand and evaluate its content, and state that SEO does not guarantee rankings or traffic. The same work serves every major engine, because they all crawl, index and rank in broadly the same way. You will also see the British spelling, search engine optimisation; it is the same discipline.

## How search engines work: crawl, index, rank

Google's [in-depth guide to how Search works](https://developers.google.com/search/docs/fundamentals/how-search-works) describes three stages, and says plainly that not every page makes it through each one:

1. **Crawling.** There is no central registry of web pages, so Google keeps discovering URLs: from links on pages it already knows, and from sitemaps site owners submit. Its **crawler**, Googlebot, downloads the page and renders it with a recent version of Chrome so it can see content that JavaScript adds. Pages blocked by robots.txt, behind a login or on a failing server are not crawled.
2. **Indexing.** Google analyzes the text, images, video and key tags such as the `<title>` element and image alt attributes. It groups pages with similar content and picks one **canonical URL** to represent them, then stores what it learned in the **index**, a very large database. Low-quality content and `noindex` rules keep pages out.
3. **Ranking and serving.** When someone searches, Google looks up matching pages in the index and orders them by relevance, which it says is determined by hundreds of factors, including the searcher's location, language and device.

Google's own summary of [how it ranks results](https://www.google.com/search/howsearchworks/how-search-works/ranking-results/) names five groups of signals: the meaning of the query, the relevance of the content, its quality, its usability, and the searcher's context and settings. Links from prominent websites are one of the quality signals, and page experience, such as mobile-friendly pages that load quickly, can decide between pages that are otherwise equal.

![Linked pages on the left are fetched by a small crawler, filed into an orange index cabinet in the centre, and passed to a ranked list of results on the right. A page behind a closed gate never reaches the cabinet.](https://computese.com/images/blog/what-is-seo/pipeline.558431bcab-1536.webp)

*A page that never reaches the index cannot rank, however good it is: crawling and indexing come before any ranking signal.*

Two facts from the same guide shape everything else in SEO. Google does not accept payment to crawl a site more often or to rank it higher, and it does not guarantee that it will crawl, index or show a page, even one that follows every guideline. [How the Google search engine works](https://computese.com/how-google-search-engine-works/) walks through each stage in depth, and [web crawling and indexing explained](https://computese.com/web-crawling-and-indexing-explained/) covers crawlers beyond Google.

## The parts of SEO, and what each one covers

SEO is usually divided by where the work happens: in the site's code and servers, on each page, in the content plan, on other people's sites, in local listings and, now, in AI answers. Each part has a dedicated article on this site.

| Part of SEO               | Main tasks                                                                                    | Covered in depth                                                                                                     |
| ------------------------- | --------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------- |
| Technical SEO             | Crawl access, status codes, XML sitemaps, canonical URLs, JavaScript rendering, mobile, speed | [Technical SEO](https://computese.com/technical-seo/), [mobile optimization](https://computese.com/mobile-optimization-for-your-website/)                      |
| On-page SEO               | Titles, meta descriptions, headings, internal links, image alt text, structured data          | [On-page SEO elements](https://computese.com/on-page-seo/), [on-page SEO, page by page](https://computese.com/improving-website-rankings-through-on-page-seo/) |
| Content and search intent | Keyword research, matching intent, original and useful content, topic clusters                | [Semantic SEO](https://computese.com/semantic-seo/)                                                                                       |
| Off-page SEO and links    | Earning backlinks, anchor text, link attributes, mentions, staying clear of link spam         | [What backlinks are](https://computese.com/what-are-backlinks-for-seo/), [quality backlinks](https://computese.com/the-power-of-quality-backlinks-in-seo/)     |
| Local SEO                 | Google Business Profile, consistent name, address and phone, reviews, location pages          | [Local SEO guide](https://computese.com/local-seo/)                                                                                       |
| Search in AI answers      | Crawler access, pages that are easy to quote and verify, measuring citations                  | [AI's impact on SEO](https://computese.com/ais-impact-on-seo-strategies/)                                                                 |

### Technical SEO

Technical SEO makes sure search engines can reach, render and index your pages. Google's [technical requirements](https://developers.google.com/search/docs/essentials/technical) are short: Googlebot is not blocked, the page returns an HTTP 200 status code, and it has indexable content. Most sites pass them without trying. The real work is everything around them: robots.txt rules, XML sitemaps, redirects, canonical tags, JavaScript that renders the content crawlers need, and duplicate URLs created by parameters. Google uses [the mobile version of a page](https://developers.google.com/search/docs/crawling-indexing/mobile/mobile-sites-mobile-first-indexing), crawled with its smartphone crawler, for indexing and ranking, so the phone version is the one that counts ([mobile optimization](https://computese.com/mobile-optimization-for-your-website/) covers it). Speed is measured with [Core Web Vitals](https://developers.google.com/search/docs/appearance/core-web-vitals): Google suggests Largest Contentful Paint within 2.5 seconds, Interaction to Next Paint under 200 milliseconds and Cumulative Layout Shift under 0.1. Our [technical SEO guide](https://computese.com/technical-seo/) covers each layer with an audit table.

### On-page SEO

On-page SEO is what each page tells searchers and search engines about itself. Google's [Search Essentials](https://developers.google.com/search/docs/essentials) put it simply: use the words people would use to look for your content, and place them in prominent spots such as the title, the main heading, alt text and link text. The title element feeds the title link in results; the snippet under it usually comes from the page text and sometimes from the meta description. Descriptive URLs, internal links with meaningful anchor text, and [structured data](https://developers.google.com/search/docs/appearance/structured-data/intro-structured-data), a standardized format that labels what a page contains, complete the list. [On-page SEO, element by element](https://computese.com/on-page-seo/) explains what Google says each one does, and [our page-by-page process](https://computese.com/improving-website-rankings-through-on-page-seo/) shows which pages to work on first.

### Content and search intent

Content is the part Google weighs most heavily in its own advice: the Starter Guide says compelling, useful content will likely influence your presence in results more than anything else in it. **Search intent** is what the searcher wants to get done: learn, compare, buy, or reach a particular site or place. Keyword research tells you the words people use; the results page tells you which intent Google has inferred, and so what kind of page can rank. Google's ranking systems are built to favour [helpful, reliable, people-first content](https://developers.google.com/search/docs/fundamentals/creating-helpful-content), and its self-assessment asks whether a page offers original information, a complete treatment of the topic and value beyond the other results. You do not need a page for every phrasing: Google's language matching understands how a page relates to many queries. [Semantic SEO](https://computese.com/semantic-seo/) covers planning a topic around its entities and questions, and our guide to [AI-generated content in SEO](https://computese.com/the-rise-of-ai-generated-content-in-seo/) covers where automation fits.

### Off-page SEO and links

Off-page SEO is the reputation a site earns elsewhere, mostly through links. Google [uses links as a signal](https://developers.google.com/search/docs/crawling-indexing/links-crawlable) of relevance and to find new pages, and the anchor text of a link tells it what the target page is about. What counts is who links to you: Google describes links from other prominent websites as a sign that information is trustworthy. A **backlink** can also count against you: buying or selling links, excessive link exchanges and automated link building are all [link spam](https://developers.google.com/search/docs/essentials/spam-policies) under Google's policies. The legitimate side is promotion: the Starter Guide lists social media, community engagement, advertising and word of mouth. Start with [what backlinks are and how Google reads them](https://computese.com/what-are-backlinks-for-seo/), then [what makes a backlink valuable](https://computese.com/the-power-of-quality-backlinks-in-seo/) and [how to build links within Google's rules](https://computese.com/how-to-do-link-building-for-seo/).

### Local SEO

Local SEO is for businesses that serve people in a place: a clinic, a shop, a contractor, an IT provider with a service area. When someone searches for a business near them, Google shows local results on Maps and Search. It says [local results depend mainly on three factors](https://support.google.com/business/answer/7091): relevance, distance and prominence, meaning how well known the business is, which includes how many websites link to it and how many reviews it has. There is no way to pay for a better local ranking. The work is a verified, complete Business Profile, the same name, address and phone number everywhere, a steady flow of genuine reviews and a real page for each location or service area. The [local SEO guide](https://computese.com/local-seo/) covers the full strategy, and [Google Business Profile optimization](https://computese.com/google-my-business-seo/) covers the profile itself.

### Search in AI answers

AI answers are the newest place a page can appear. For Google's AI Overviews and AI Mode, Google says there are [no additional requirements](https://developers.google.com/search/docs/appearance/ai-features): a page must be indexed and eligible to show with a snippet, and the usual SEO best practices apply. Google's [guide to generative AI features](https://developers.google.com/search/docs/fundamentals/ai-optimization-guide) explains why: the answers use retrieval-augmented generation grounded in its core ranking systems, and a technique called query fan-out, where the model runs several related searches and links to the pages it draws on.

![A search box sends one query into an answer panel, which fans out into several related searches against a stack of index cards and links back to the pages it used. One returned page is orange.](https://computese.com/images/blog/what-is-seo/fanout.e89c905db5-1536.webp)

*AI Overviews retrieve pages from the same index as classic results: a page has to be indexed and eligible for a snippet before it can be cited.*

The same guide addresses **AEO and GEO** (answer and generative engine optimization) directly: from Google Search's perspective, optimizing for generative AI search is still SEO. Bing says the same of Copilot, which relies on the same crawling, indexing and ranking foundation as its classic results. Other assistants, such as ChatGPT search and Perplexity, find and cite pages in their own ways; [AI's impact on SEO](https://computese.com/ais-impact-on-seo-strategies/) covers each engine, and [AI Overviews in Google Search](https://computese.com/ai-overviews-in-search/) covers how Google picks its sources.

## Why SEO matters for a business

Search is where people describe a need in their own words, at the moment they have it. A business that ranks for those words meets customers who are already looking, which is why SEO is worth doing even for companies that also advertise.

The economics are different from advertising. Google [sells only ad space](https://www.google.com/search/howsearchworks/our-approach/ads-on-search/), and says no one can buy better placement in its organic results. Search ads are usually bought on a [cost-per-click](https://support.google.com/google-ads/answer/116495) basis, meaning you pay for each click on your ad. Ads bring visitors for as long as you keep paying for the clicks. Organic listings take longer to earn, but a click on one costs nothing, and a page that keeps answering its query well keeps bringing visitors.

![A results page with an ad block and an orange organic listing. Clicks on the ad pass through a coin meter on their way to a website; clicks on the organic listing reach it directly.](https://computese.com/images/blog/what-is-seo/organic.2cd486e0fb-1536.webp)

*Ad clicks are paid for one at a time; an organic listing costs nothing per click, and is paid for up front in work.*

Many businesses use both, and the choice between them is a question of budget and timing rather than principle; [SEO vs SEM](https://computese.com/seo-vs-sem/) sets out when each fits. SEO has two further effects that advertising does not. The work improves the site for everyone who uses it, because fast, mobile-friendly, clearly written pages are what Google's ranking systems try to reward. And it protects what you already have: Bing's guidelines note that proper 301 redirects preserve visibility and traffic when URLs move, and a redesign that changes URLs without them puts the search traffic a site has earned at risk.

## How long SEO takes

Google's own statements are the most reliable guide, and none of them gives a fixed timeline, because the answer depends on the site, the change and the competition.

- **For any single change:** the [Starter Guide](https://developers.google.com/search/docs/fundamentals/seo-starter-guide) says some changes take effect within a few hours and others take several months, and that you should generally wait a few weeks before judging whether a change helped. Not every change produces a visible effect.
- **For a page you ask Google to look at again:** [crawling can take from a few days to a few weeks](https://developers.google.com/search/docs/crawling-indexing/ask-google-to-recrawl), and requesting it more than once does not make it faster.
- **For SEO as a whole:** you will still see "four months to a year" quoted everywhere. That range came from Google's page on hiring an SEO, which said results [typically took four months to a year](https://web.archive.org/web/20260301031656/https://developers.google.com/search/docs/fundamentals/do-i-need-seo) from the first changes. The [current version of that page](https://developers.google.com/search/docs/fundamentals/do-i-need-seo), last updated in June 2026, gives no range at all.

What speeds things up is mostly under your control: pages Google can reach through links, a site with no technical blocks, and content that is clearly the best answer to its query. What slows it down is not: how often Google chooses to recrawl, and how strong the pages already ranking for the same searches are.

## What SEO costs, according to Google

Appearing in search is free. Google's page on hiring an SEO says advertising with Google has no effect on organic results, that Google never accepts money to include or rank a site, and that it costs nothing to appear in organic results. [Search Console](https://support.google.com/webmasters/answer/9128668), Google's tool for monitoring how a site performs in search, is free too, although you do not need it to be included.

The cost of SEO is the work: developer time for technical fixes, writing and updating content, research tools, and an agency or consultant if you hire one. How to decide whether that spend fits your business, budget it and measure the return is covered in [SEO marketing basics](https://computese.com/seo-marketing/). Google does not publish prices, and no honest figure fits every site; it depends on the size of the site, how much is broken and how competitive the searches are. Google does say that a small local business can probably do much of the work itself, and that the best time to bring in a professional is when a redesign or a new site is being planned, the earlier the better.

> [!WARNING]
> Google's own advice on hiring: no one can guarantee a first-place ranking. Walk away from anyone who promises one, claims a special relationship with Google, advertises a "priority submit" to Google, or will not explain what they are changing on your site. You are responsible for what anyone you hire does to it.

If you want help, our [SEO service](https://computese.com/services/seo/) starts with a technical SEO audit: a crawl of the whole site, a read of Search Console and, where you have them, your server logs, with the issues ranked by impact and effort. It does not include guaranteed rankings, because no one can promise them honestly.

## What Google says not to worry about

A lot of SEO advice is out of date or was never true. The Starter Guide ends with a list of topics Google believes you should not focus on, and its generative AI guide adds a few more:

| Common belief                                                 | What Google says                                                                                                       |
| ------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------- |
| The meta keywords tag helps ranking                           | Google Search does not use it.                                                                                         |
| Repeating a keyword helps                                     | Keyword stuffing tires readers and breaks Google's spam policies.                                                      |
| Keywords belong in the domain name and URL                    | They have hardly any effect beyond appearing in breadcrumbs. Country domains matter only for targeting a country.      |
| Pages need a minimum word count                               | Length alone does not matter for ranking; there is no ideal minimum or maximum.                                        |
| Subdomains beat subdirectories, or the reverse                | Choose whatever suits your business.                                                                                   |
| PageRank is what counts                                       | It is one of many ranking signals.                                                                                     |
| Duplicate content brings a penalty                            | The same content under several URLs is inefficient, not a cause for a manual action. Copying other sites is different. |
| Headings must follow a strict order and count                 | Semantic order helps screen readers but does not matter to Google Search.                                              |
| E-E-A-T is a ranking factor                                   | It is not.                                                                                                             |
| AI search needs llms.txt, special markup or "chunked" content | Google Search ignores llms.txt and needs no special markup or chunking for its AI features.                            |

None of this means the items are harmful (clear headings still help readers), only that they are not where rankings come from. Time spent on them is time not spent on access, content and reputation.

## How to start with SEO

You do not need a strategy document to begin. For a site that already exists, this order puts the checks that block everything else first:

1. **See whether Google already knows your site.** Search for `site:yourdomain.com`. If pages appear, you are in the index; if nothing does, check the technical requirements before anything else.
2. **Verify the site in Google Search Console** (and, for Bing and Copilot, in Bing Webmaster Tools). Search Console shows which pages are indexed, which queries bring impressions and clicks, and which problems Google found.
3. **Meet the technical minimum.** Every page you want found must return a 200 status, must not be blocked by robots.txt or `noindex`, should work well on a phone, and should be reachable through a normal link from another page on the site.
4. **Give each important page one job.** One page per service, product or question, with a title and main heading in the words your customers use. Merge pages that compete for the same search.
5. **Make each page the best answer to its query.** Original, current and specific, with sources where you state facts. Update or remove content that has gone stale.
6. **Tell people the site exists.** Claim your Business Profile if you serve an area, take part in the communities your customers use, and earn links by publishing things worth citing. Never buy them.
7. **Measure after a few weeks.** Compare impressions, clicks and leads with the period before the change, and keep what worked.

From there, the [SEO improvement process](https://computese.com/how-to-improve-seo-a-comprehensive-guide/) shows how to audit, prioritize, fix and measure in a loop, and the [SEO checklist](https://computese.com/seo-tips-for-websites-boost-your-online-presence/) lists fourteen specific fixes in order of impact. Small businesses short on time can follow the [90-day plan](https://computese.com/mastering-seo-for-small-business-websites/); IT companies can use [SEO for IT companies and MSPs](https://computese.com/essential-seo-tips-categories-for-your-it-website/); online stores need [e-commerce SEO](https://computese.com/e-commerce-seo/) for filters, variants and product data. Every article in the series is listed under [SEO](https://computese.com/category/seo/).

## Key terms
- **Search engine optimization (SEO)**: Improving a website so search engines can crawl, index and understand its pages, and so searchers choose its results. British English spells it optimisation; the discipline is the same.
- **Organic results**: The unpaid listings on a search results page, ordered by the search engine's ranking systems. Ads appear separately, labelled Sponsored or Ad, and cannot buy organic placement.
- **Crawler**: A program that fetches web pages by following links and sitemaps, such as Googlebot for Google or Bingbot for Bing. Also called a bot or spider.
- **Index**: The search engine's database of the pages it has fetched and analyzed. Only indexed pages can appear in search results or be cited in AI answers.
- **Canonical URL**: The one URL a search engine chooses to represent a group of duplicate or near-duplicate pages. It is the version shown in results.
- **Search intent**: What the searcher wants to get done with a query: learn something, compare options, buy, or reach a particular site or place.
- **Backlink**: A link from another website to yours. Google uses links to discover pages and as one signal of relevance and quality.
- **Core Web Vitals**: Google's field metrics for loading (Largest Contentful Paint), responsiveness (Interaction to Next Paint) and visual stability (Cumulative Layout Shift).
- **AEO and GEO**: Answer engine optimization and generative engine optimization: names for work aimed at AI answers. Google says that, for its search, this is still SEO.

## Common questions

### What is SEO in simple terms?

SEO is making your website easy for search engines to find, read and understand, and making your pages the most useful answer to what people search for. Done well, your pages show up in the unpaid results for the searches that matter to you, and people click them.

### What does search engine optimization require?

At minimum, Google needs three things from a page: Googlebot is not blocked from it, it returns an HTTP 200 status, and it has indexable content. Beyond that, SEO requires content that answers what people search for, in the words they use, and a site other people find worth linking to.

### How long does SEO take to work?

Google's SEO Starter Guide says some changes take effect within a few hours and others take several months, and suggests waiting a few weeks before judging a change. An earlier version of Google's page on hiring an SEO, archived in March 2026, gave a typical range of four months to a year; the current version gives no range.

### Is SEO free?

Appearing in Google's organic results costs nothing, and Google never accepts money to include or rank a site. Search Console is free as well. What costs money is the work: developer time, writing and updating content, tools, or an agency or consultant.

### Can I do SEO myself?

Often, yes. Google says a small local business can probably do much of the work itself, starting with its SEO Starter Guide. Google says the best time to bring in a professional is before a redesign or a new site launch, the earlier the better.

### Is SEO still relevant with AI search?

Yes. Google says its AI Overviews and AI Mode rest on its core ranking systems and have no extra requirements beyond being indexed and eligible for a snippet, and Bing says the same of Copilot. The foundations that make a page rank are the ones that make it citable.

## Sources
1. [Search Engine Optimization (SEO) Starter Guide](https://developers.google.com/search/docs/fundamentals/seo-starter-guide), Google Search Central
2. [How Google Search determines ranking results](https://www.google.com/search/howsearchworks/how-search-works/ranking-results/), Google
3. [Bing Webmaster Guidelines](https://www.bing.com/webmasters/help/webmaster-guidelines-30fba23a), Microsoft Bing
4. [In-depth guide to how Google Search works](https://developers.google.com/search/docs/fundamentals/how-search-works), Google Search Central
5. [Google Search technical requirements](https://developers.google.com/search/docs/essentials/technical), Google Search Central
6. [Mobile site and mobile-first indexing best practices](https://developers.google.com/search/docs/crawling-indexing/mobile/mobile-sites-mobile-first-indexing), Google Search Central
7. [Understanding Core Web Vitals and Google search results](https://developers.google.com/search/docs/appearance/core-web-vitals), Google Search Central
8. [Google Search Essentials](https://developers.google.com/search/docs/essentials), Google Search Central
9. [Introduction to structured data markup in Google Search](https://developers.google.com/search/docs/appearance/structured-data/intro-structured-data), Google Search Central
10. [Creating helpful, reliable, people-first content](https://developers.google.com/search/docs/fundamentals/creating-helpful-content), Google Search Central
11. [Link best practices for Google](https://developers.google.com/search/docs/crawling-indexing/links-crawlable), Google Search Central
12. [Spam policies for Google web search](https://developers.google.com/search/docs/essentials/spam-policies), Google Search Central
13. [Tips to improve your local ranking on Google](https://support.google.com/business/answer/7091), Google Business Profile Help
14. [AI features and your website](https://developers.google.com/search/docs/appearance/ai-features), Google Search Central
15. [Optimizing your website for generative AI features on Google Search](https://developers.google.com/search/docs/fundamentals/ai-optimization-guide), Google Search Central
16. [How ads work on Google Search](https://www.google.com/search/howsearchworks/our-approach/ads-on-search/), Google
17. [Cost-per-click (CPC): Definition](https://support.google.com/google-ads/answer/116495), Google Ads Help
18. [Ask Google to recrawl your URLs](https://developers.google.com/search/docs/crawling-indexing/ask-google-to-recrawl), Google Search Central
19. [Do you need an SEO? (archived copy, March 1, 2026)](https://web.archive.org/web/20260301031656/https://developers.google.com/search/docs/fundamentals/do-i-need-seo), Internet Archive
20. [Do you need an SEO?](https://developers.google.com/search/docs/fundamentals/do-i-need-seo), Google Search Central
21. [About Search Console](https://support.google.com/webmasters/answer/9128668), Google Search Console Help