SEO fundamentals
What SEO is and how it actually works
SEO is the work of making your business show up when someone searches for what you sell, without paying per click. It isn't a trick or a one-time setting: it's the sum of a fast site, pages that answer real questions, and signals that confirm your business exists and delivers.
This guide walks the full process in the order it happens, so you know where the bottleneck is when something isn't working.
By Andrea Bolivar · Updated August 4, 2026 · 8 min read
Key takeaways
- Google crawls, indexes, then ranks: fail step one and the rest never happens.
- Every page should answer one specific search intent.
- Authority comes from real mentions and links, never purchased ones.
- Durable results usually show between month three and month six.
The three steps Google takes before showing you
First it crawls: a bot follows links and discovers URLs. If your page isn't linked from anywhere and isn't in the sitemap, chances are it never gets seen.
Then it indexes: it stores a processed copy of the page and decides what it's about. Titles, headings and visible text that doesn't require heavy JavaScript matter most here.
Finally it ranks: among all indexed pages that could answer the query, it picks and orders. That order depends on relevance, quality, user experience and context such as language, location and device.
Crawling
Clean internal links, an up-to-date sitemap and a robots.txt that doesn't block what matters.
Indexing
Content in the HTML, a single H1, a correct canonical and no accidental noindex tags.
Ranking
Relevance to the query, trust signals and a page that's genuinely usable on a phone.
Search intent: the filter that decides everything
Before writing a word, ask what the searcher expects to find. "What is SEO" and "SEO agency Medellín pricing" are different jobs. The first wants an explanation; the second wants a service page with local context and an obvious way to get in touch.
When your page format doesn't match the intent, you can have the best copy in the world and still not rank.
- Informational: wants to understand something (guides, definitions, comparisons).
- Commercial: is evaluating options (comparisons, pricing, case studies).
- Transactional: wants to hire or buy now (service and contact pages).
- Navigational: is looking for a specific brand.
What you control and what you don't
You control your site structure, speed, the depth and quality of your content, the consistency of your business data and the mobile experience. You don't control algorithm updates, what competitors do, or how much demand exists in your category.
So invest in what compounds: useful pages, real reviews and a healthy technical base. That survives algorithm updates far better than any shortcut.
How long it takes and how to tell it's working
On a new site, the first signals appear between weeks 6 and 12: more pages indexed, impressions climbing, first positions on long-tail terms. Competitive terms usually take three to six months of consistent work.
Track impressions and clicks per query, not just rankings. Position 8 on a term that brings customers beats position 1 on something nobody searches with buying intent.
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