What is SEO, and how do you improve it?

Search engines work in three steps

Every ranking comes out of three machine steps, and every SEO tactic that works maps to one of them.

1 · Crawling. Software agents called crawlers, such as Googlebot and Bingbot, follow links from page to page and download what they find. If no link reaches a page, or your robots.txt file blocks it, it may never be collected at all. People worry about "crawl budget," but Google says it only becomes a real constraint on very large or fast-changing sites. For a typical business site, the job is simpler: link every page, and block nothing you want found.

2 · Indexing. The engine parses each page it collected and files it in an enormous library organized by meaning: what the page is about, which questions it answers, how it relates to your other pages and whether it duplicates something else. Your titles, headings, structured data and internal links do their quiet work here. They're the labels the librarian reads. A page can be crawled and still left out of the index if the engine judges it thin, duplicated or unimportant.

3 · Ranking. When someone searches, the engine pulls candidates from the index and orders them using hundreds of signals: relevance to the words and the intent behind them, the page's demonstrated authority, its usability on the searcher's device, its freshness where freshness matters, and how confident the engine is that the source is who it claims to be. Results shift with the searcher's location, language and device, so you never have one single ranking.

Hold on to that model. Every improvement in the rest of this guide makes one of those steps easier for the machine, and nearly every one also makes the page better for the person searching.

What search engines reward in 2026

Ranking systems change constantly in the details and slowly in the fundamentals. Across twenty years of updates, these rewards have lasted:

• Satisfying the search, quickly. A page that answers the question visibly and near the top, without making the visitor dig, beats a page that ranks for the phrase and hides the answer.
• Demonstrated experience and expertise. E-E-A-T (experience, expertise, authoritativeness, trustworthiness) comes from Google's quality-rater guidelines. Google says it isn't a single ranking factor; its systems look for a mix of signals that point to it, and trust counts most. In practice that means real specifics, real process and named authors, which generic filler can't supply.
• Technical legibility. That means real text in real HTML, a clean heading structure, working links, one canonical version of each page and structured data that matches the visible content. Machines can't reward what they can't parse.
• Honest speed on phones. Core Web Vitals track how fast the main content appears (LCP), how quickly the page responds to taps (INP) and how much the layout jumps around (CLS). Google measures them on real visitors' devices and its ranking systems use them, though Google is plain that good scores alone won't put a page at the top. Check phones first: slower chips and patchier networks make them the harder test.
• Corroborated identity. When a business's name, offer, location and claims match across its site, its business profiles, its reviews and the wider web, it's a safer bet to rank than one that contradicts itself.

Improving technical SEO, the layer machines read first

Technical SEO covers everything that decides whether engines can crawl your site, render it and file it correctly. It's the least glamorous pillar, and it tends to break quietly, with nobody noticing.

Make every page reachable and unambiguous

• Internal links are the roads. A good rule of thumb is to keep every important page within a few clicks of your homepage, through real HTML links rather than script-only buttons. Orphan pages, which you can reach only by knowing the URL, rank poorly because they're barely crawled and the rest of your site passes them no authority.
• One address per page. When the same content answers at several URLs (with and without www, with tracking parameters, in near-duplicate variants), engines split its credit. A canonical tag on each page tells engines which address you prefer, and redirects retire the rest.
• A current, accurate sitemap and robots.txt. The XML sitemap is your table of contents for crawlers. It should list your real, indexable pages and nothing else. robots.txt should block only what you want left unread.

Make pages arrive as text a machine can read

• Content in HTML first. Google renders JavaScript, but many AI crawlers, OpenAI's and Anthropic's among them, don't run it at all, so text that only appears after scripts execute is invisible to them. The dependable pattern is server-rendered or static HTML, with scripts added as an enhancement. This site is built that way.
• Headings as an outline. Use one h1 that states what the page is, then h2/h3 sections a machine could read as a table of contents. If your headings, read on their own, don't summarize the page, restructure it.
• Structured data (schema). JSON-LD markup such as Organization, Service, FAQPage, Article and BreadcrumbList tells engines, in their own vocabulary, what your page claims. It must mirror the visible content exactly, because markup that claims something the page doesn't show can cost you rich results.

Make it fast where it counts

• Images are the usual culprit. Serve them at the size they display, compressed in modern formats and lazy-loaded below the fold, with dimensions declared so the layout doesn't jump.
• Fonts and scripts come second. Preconnect to font hosts, defer scripts that aren't critical, and make the first thing a visitor sees the page's content instead of a spinner.
• Measure on real phones. Lab tests on a fast laptop flatter you. Field data, which is what Google uses, comes from your visitors' devices. Test on a mid-range phone with a mediocre signal.
• HTTPS on every page, with no warnings. Browsers flag pages that aren't served securely, and a security warning ends most visits on sight. (We explain what the "not secure" warning means in a separate guide.)

Improving content and on-page SEO

Rankings are won in the content, because that's where searches get satisfied.

Start from the questions customers ask

Modern engines match intent, whatever the exact words. So the working unit of SEO content is the question a real customer asks. List the twenty questions you hear in sales conversations, in your inbox and on the phone. Each one becomes a page or a section. Put your customers' own phrasing ("why is my website so slow," "how much does a custom site cost") in your titles and headings. Engines understand synonyms; the person scanning the results would rather not translate.

Answer first, then earn the depth

Build every substantial page the way this one is built: the direct answer in the first two sentences, visibly boxed or bolded, with the detail below for readers who want it. It serves the person skimming first, and it hands search engines and AI assistants a clean passage to show. Google says you don't need to write specially for its AI features, and this isn't special writing. It's how a busy reader wants a page to work.

On-page mechanics that still matter

• Title tag: the page's question or promise in the customer's words, unique across your site. Google trims long titles to fit the screen, so roughly 50–60 characters is a safe length. It's also your ad in the results list, though Google sometimes rewrites it.
• Meta description: it isn't a ranking factor, and Google often writes its own snippet instead. When it is shown, it's your pitch for the click, and one sentence that makes a real promise beats a pile of keywords.
• Internal links with meaningful anchors. "Read our guide to why websites are slow" tells engines what the linked page is about. "Click here" tells them nothing. Every new page should link to its neighbors on the same topic and be linked from them. That's how engines learn where your expertise lies.
• Freshness you can prove. Show updated dates on pages you maintain, and revise them for real when facts change. Google runs freshness systems for searches where recent information is expected, and a visible, honest date tells readers the page is looked after.
• Depth over duplication. One thorough page per topic beats five thin, overlapping ones that compete with each other and dilute your authority. Consolidate them and redirect the losers.

Show the experience AI content farms can't fake

Generic explainer text now costs nothing to produce, so it's worth about that much. Google's own guidance calls the alternative "non-commodity" content: first-hand work that goes beyond common knowledge. That means your process, your measured results, the tools you use by name, your own photographs, and recommendations with your reasoning attached. Write what only you can write.

Improving authority and off-page SEO

Engines corroborate. A site that exists in a vacuum, with no links pointing to it and no mentions, reviews or profiles, is hard to trust however good its pages are. To build authority without cutting corners:

• Earn links by being worth citing. The link strategy that lasts is publishing things worth pointing at: original data, useful tools, definitive answers, strong opinions well argued. One relevant link from a real industry site outweighs dozens of spam directory links. Bought link schemes are a documented way to lose rankings.
• Show up where your industry talks. Trade associations, local business groups, supplier and partner pages, event listings. It's unglamorous, legitimate work, and it adds up.
• Reviews are authority. Google says more reviews and positive ratings can help a business's local ranking. A steady stream of genuine ones, asked for fairly and answered professionally, also feeds the AI answers that summarize "what people say about" businesses like yours.
• Consistency everywhere. Keep your business name, description, address and phone identical in your site footer, Google Business Profile, directories and social accounts, and fix stale variants as you find them.

Local SEO, if you serve an area

If customers choose you partly by location, a second ranking system applies: the map results. Google says it ranks local results on relevance, distance and prominence. You can't move the distance, but you can move the other two with a complete, actively maintained Google Business Profile (correct categories, services, hours, photos), a steady flow of reviews with replies, consistent citations of your name, address and phone across the local web, and location-relevant pages on your site that say, in real text, where you work and what you do there. Local searches ("web design studio Oregon") mix map results with ordinary ones, so everything in this guide feeds the map too.

How to tell whether SEO is working

SEO without measurement is astrology. Watch these four instruments:

• Google Search Console (free) is the ground truth for which queries show your pages, your average position, what gets clicked and what's failing to index. Check the Pages and Performance reports at least monthly; a separate report now counts how often your pages appear in AI Overviews and AI Mode.
• Core Web Vitals field data, in Search Console and PageSpeed Insights, shows the speed your real visitors experience.
• Rankings, read as a trend. Positions vary by device, location and day. Watch the 3-month trend for your priority queries and ignore the daily wobble.
• Business outcomes. Count the calls, form fills and sales that come from organic visits. Rankings that don't move revenue are a hobby.

On timing, technical fixes register days to weeks after a recrawl, content improvements in one to three months, and authority over quarters. The effect compounds, so progress looks slow for a while and then speeds up. There's a fuller version of this in how to rank higher on Google.

The first 30 days, step by step

1. Get a baseline reading. Before you touch anything, write down where you stand: indexing status and current queries from Search Console, field speed from PageSpeed Insights, and a pass over structure, content and trust. The Grader covers that last part (in sample mode, as a labeled estimate), and it can't see your Search Console data, so pull that yourself.
2. Fix the blockers. Clear anything that stops crawling or rendering: broken pages, redirect chains, content that depends on scripts, missing canonicals, security warnings. The machine has to be able to read you before anything else counts.
3. Rewrite your five most important titles and openings. Take your homepage and your four highest-value pages, and give each a title in the customer's language, an answer-first opening and an accurate meta description.
4. Publish two real answers. Write two pages, each giving a full answer to one question customers really ask. Structure them answer-first, with proper headings and a short FAQ for the follow-up questions.
5. Lock your identity down. Complete your Google Business Profile, make your name, description and contact details identical everywhere you appear, and fix the obvious stale listings.
6. Compress the images. It's usually the biggest speed win you can get in an afternoon.
7. Start the measurement habit. Verify Search Console, put a 30-minute monthly review on the calendar, and list your priority queries so next month's comparison is fair.

What not to do

• Don't buy links, or a promise of page one. Link schemes are explicitly penalized, and nobody outside a search engine can guarantee its results. A vendor who makes that promise has told you something about the vendor.
• Don't stuff keywords. Keyword density is a 2009 metric. Repetitive, unnatural phrasing reads as spam to engines and people alike.
• Don't mass-produce thin AI pages. Google's spam policies name "scaled content abuse": many pages made mainly to game rankings, whether a model or a person wrote them.
• Don't chase algorithms. Sites built on tricks get whiplash at every update. Sites built on answering customers well tend to benefit from updates.
• Don't set it and forget it. SEO is maintenance, like the books or the storefront. Attention every quarter beats a panic once a year.

AEO and GEO build on the same work

A growing share of searches now end in an AI-written answer instead of a clicked link, in ChatGPT, Perplexity, Copilot or Google's own AI Overviews. Optimizing for those systems is called AEO (answer engine optimization) or, nearly interchangeably, GEO (generative engine optimization). Both reward the fundamentals this guide teaches, answer-first structure, real text, a consistent identity and corroborated authority, plus a few specifics of their own. Google goes further and calls optimizing for its own AI features plain SEO. We've covered both at the same depth as this page in What is AEO?, What is GEO? and the side-by-side SEO vs. AEO vs. GEO comparison, with playbooks for ChatGPT and Google AI Overviews. We grade all of it as one Findability lens, and the commercial version of that reading is our SEO & AEO audit.

SEO questions owners ask