How SEO steps help improve visibility:

The Google guide gives detailed examples and explains how these SEO steps help improve visibility:

* Create a unique, descriptive title tag for every web page. The title tag appears in the first line of the search results.
* Summarize page content in the description meta tag, which may be used as the snippet that appears under the page title.
* Structure URLs to include relevant keywords that visitor- and crawler-friendly.
* Provide a clear navigation hierarchy, using text (not graphics) for navigation links to guide visitors through the site.
* Include a site map and breadcrumbs for a quick, visual orientation to the site structure.
* Create compelling, useful and relevant content that visitors are looking for, find exclusively on your site, and will refer to in the future.
* Write descriptive anchor text for links to other pages, not "click here," to inform visitors about what's next and guide crawlers to deep pages.
* Use heading tags to create a visual hierarchy on the page -- headline, subhead, sub-subhead -- which takes visitors from the most to least important content.
* Name images with descriptive captions as alt text, which can be read by crawlers and visitors who browse text-only.
* Use robots.txt to steer crawlers away from searchable pages. E.g., a NOINDEX tag prevents a page from appearing in search results; a NOFOLLOW tag prevents crawlers from going from your page to an untrusted page (i.e., referenced in a blog comment).