SEO, short for search engine optimization, targets organic search results, as opposed to paid search: the positions you earn can't be bought. Google says so in black and white in its documentation: it accepts no payment to crawl a site more often or rank it higher. SEO is therefore about helping search engines find, understand and value your pages, and helping searchers choose your result over the others.
How a search engine works
Google describes three stages, and a page can stop at any one of them:
- Crawling: bots (Googlebot, Bingbot…) download the pages they discover, mostly by following links from pages they already know.
- Indexing: the engine analyzes the text, images and tags, then stores the page in its index.
- Serving: for each query, it selects and ranks the pages that best answer it, taking many signals into account (relevance, quality, language, device, location…).
No stage is guaranteed: even a flawless site has no assurance of being crawled, indexed or shown.
The three pillars of SEO
Technical SEO
The search engine must be able to access and read the pages: stable URLs, HTML that contains the text, decent response times, HTTPS, a sitemap, no accidental blocking in the robots.txt file, and a single URL per piece of content.
Content
This is the heart of the matter: pages that genuinely answer the question asked, with original information, a clear title and a readable structure. Google states that there is no ideal word count: length alone doesn't determine rankings.
Popularity
Links from other sites, backlinks, help the search engine discover your pages and serve as one signal among others. Internal links count too: every important page should be linked from at least one other page on the site.
How long until you see results?
SEO is a long-term effort. According to Google, some changes take effect within a few hours, others over several months, and it advises waiting a few weeks before judging the effect of a change. Be wary of any offer that promises the top spot: Google reminds us that there is no secret that will automatically put a site first. To measure progress, Search Console and a tool that tracks your positions in the search results pages are enough for most sites.
For WordPress
- Visibility: under Settings > Reading, the “Discourage search engines from indexing this site” checkbox must be unchecked in production. When checked, since WordPress 5.3, it adds a
noindex, nofollowrobots tag to pages. It is a common mistake after going live from a staging site. - Permalinks: choose a readable structure (Settings > Permalinks) from the start, because changing it later requires redirects.
- SEO plugins: Yoast SEO, Rank Math or All in One SEO handle titles, descriptions, sitemaps and canonical tags. One is enough; installing two creates duplicates.
SEO and security
A hacked site often loses its rankings: injected spam pages, hidden redirects, a “dangerous site” warning. Cleanup and the reconsideration request are covered in our article on SEO spam after a hack. Conversely, hiding WordPress's technical footprints changes neither your content nor your public URLs; the real effects of masking on SEO are analyzed separately. WP Masquerade reduces exposure to attack bots, but it replaces neither an SEO plugin nor an anti-malware tool.