Search engine optimization (SEO) is the practice of making your website easier for search engines to find, understand and recommend, so the right people discover it when they search. It covers the content you publish, how your site is built, and how the rest of the web talks about you.
SEO is not a trick or a one-time setup. It is a steady, compounding discipline that also shapes how AI assistants and AI-powered search features find and cite your pages, since most of them lean on the same search indexes.
What is search engine optimization (SEO)?
Google's own SEO Starter Guide describes SEO as helping search engines understand your content and helping users find your site and decide whether to visit it. That second half matters. Ranking is only useful if the result you show earns the click and serves the visitor once they arrive.
Most practitioners split SEO into three working areas. Search Engine Land's SEO guide frames them as content (on-page) optimization, technical SEO, and off-page brand and authority building. Each one supports the others, and weakness in any one tends to cap results from the rest.
- On-page SEO: the content and HTML of individual pages, including titles, headings, copy, internal links and images.
- Technical SEO: the infrastructure that lets search engines crawl, render and index your site.
- Off-page SEO: signals from outside your site, such as links, brand mentions, reviews and reputation.
Why SEO matters for search and AI answers
Organic search is one of the few channels where people come to you already describing their problem in their own words. If your page answers that need well, you earn traffic that does not stop the moment an ad budget runs out.
SEO now matters for AI visibility too. Google says there are no extra requirements to appear in AI Overviews or AI Mode beyond standard SEO, and a page must be indexed and eligible for a snippet to be shown as a supporting link (Google Search Central, AI features). In other words, solid SEO is the entry ticket for generative engine optimization. If search engines cannot crawl and index a page, AI features built on them generally cannot cite it either.
How search engines and SEO work
Google explains its process in three stages in How Search Works. Understanding them tells you where SEO effort actually lands.
Crawling
Googlebot discovers URLs through links, sitemaps and pages it already knows, then fetches and renders them. Pages behind logins, blocked by robots.txt, or on a struggling server may not get crawled. This is mostly the job of technical SEO and good internal linking.
Indexing
Google analyzes the text, title elements, images and other signals on the page, groups duplicates, and picks a canonical version to store. Indexing is not guaranteed. Low-quality pages or pages that block indexing may be left out.
Serving and ranking
When someone searches, Google pulls matching pages from its index and ranks them by relevance and quality, using factors like language, location and device. Google states that payment does not influence crawling frequency or rank, which is why organic results have to be earned.
SEO in practice: a simple example
Imagine a small, hypothetical accounting firm that wants more clients searching for help with quarterly estimated taxes. A practical SEO effort might look like this:
- Research what people actually search, and the intent behind each phrase. "How to calculate estimated taxes" is informational, while "accountant for estimated taxes near me" is commercial and local.
- Publish one genuinely useful guide for the informational query, written or reviewed by a credentialed accountant, and a service page for the commercial query.
- Make sure both pages are crawlable, load quickly on mobile, use clear titles, and link to each other.
- Earn mentions and links from relevant places, such as a local business association or a guest article for a small-business publication.
- Track impressions, clicks and leads in Google Search Console and analytics, then refine.
SEO best practices that hold up
Write for people first
Google's guidance on helpful, reliable, people-first content asks whether your page offers original information or analysis and whether readers would trust or bookmark it. Show who wrote the content, how it was made, and why it exists. Google also says there is no ideal word count, so write as much as the topic needs.
Match search intent
Every query implies a goal. Study the SERP for your target query to see what format Google already rewards, such as a guide, a product list or a local map, and build a page that serves that goal better than what is there.
Get the technical basics right
Google's technical requirements are short: Googlebot is not blocked, the page returns an HTTP 200 status, and it has indexable content. Beyond that, focus on clean internal links, a sensible site structure, mobile-friendly pages and good page experience.
Use titles, headings and links clearly
Write unique, descriptive title elements for each page. Use descriptive anchor text for links, both internal and external. These help readers and help search engines understand how pages relate.
Add structured data where it fits
Schema markup can make pages eligible for rich results and clarify what a page is about. Keep it accurate and consistent with the visible content.
Build reputation, not just links
Links still matter, but Google notes PageRank is only one of many signals. Earn attention by publishing things worth citing and by showing up in the communities your customers already use.
Measure and be patient
Google says some changes show up within hours while others take months, and suggests waiting a few weeks before judging a change. Measure against a baseline instead of reacting to daily swings.
Common SEO mistakes and myths
- Chasing old tactics. Google says it does not use the keywords meta tag, and that keyword stuffing goes against its spam policies.
- Believing in guarantees. Google's page on hiring an SEO is blunt: no one can guarantee a #1 ranking. Treat any such promise as a red flag.
- Treating E-E-A-T as a checkbox. E-E-A-T is not a direct ranking factor. It describes qualities Google's systems try to reward, and it is earned through real expertise and trust, not by adding an author bio alone.
- Ignoring the technical layer. Great content cannot rank if it is blocked, broken, or invisible to crawlers.
- Publishing at scale without value. Mass-producing thin pages, whether by hand or by AI, risks running into Google's scaled content abuse policy.
- Stopping too early. SEO compounds. Many sites quit right before the work starts paying off.
SEO vs. GEO
SEO aims to earn visibility in traditional search results. GEO aims to earn citations and mentions inside AI-generated answers, such as Google AI Overviews, ChatGPT and Perplexity. They overlap heavily, because AI systems often retrieve from search indexes and favor clear, trustworthy, well-structured pages. The differences are mostly in measurement and emphasis: GEO pays closer attention to how answers are phrased, which sources get cited, and how consistently your brand is described across the web.
How Butter approaches SEO
At Butter, we treat SEO as the foundation that GEO is built on. Our GEO+SEO plan pairs monthly AI prompt testing with the classic SEO work that makes pages discoverable: published articles, unlimited on-page optimization, a quality backlink each month, and technical fixes for issues like broken links and crawl problems. Clients can follow progress in the Butter Analytics dashboard, which connects to Google Analytics and Search Console. We do not promise rankings or AI placements, because nobody honestly can. What we do is keep the fundamentals clean and consistent month after month. If you want to see how that maps to your site, our SEO services page lays it out.
Frequently asked questions
How long does SEO take to work?
It varies. Google says some changes take effect within hours while others take months, and it recommends waiting a few weeks before judging a change. Competitive topics and new sites usually need longer.
Is SEO still worth it with AI search?
Yes. Google says pages need to be indexed and eligible for a snippet to appear as links in its AI features, and there are no extra requirements beyond standard SEO. Good SEO is the groundwork for AI visibility.
Can I do SEO myself?
Many small sites can handle the basics with Google's free documentation and Search Console. Hiring help makes sense when you lack time, face strong competition, or have technical issues you cannot diagnose.
Can anyone guarantee first-page rankings?
No. Google states that no one can guarantee a #1 ranking, and it advises avoiding SEO providers who promise one. Rankings depend on many factors outside any provider's control.