Search engines are software programs that gather information from the Internet and rank websites by relevance, using methodologies that vary considerably between providers. An effective SEO strategy starts with understanding how those ranking systems work and the tactics less-than-reputable firms use to inflate results.
How do keywords work in SEO?
Keywords are words or phrases search engines use to understand the content of your website, and they serve as the building blocks of SEO strategies and the metrics of success. They often appear as a single word, but they can also take phrase or question form depending on what users search for. For example, someone searching “mailchimp guides” likely needs help using the Mailchimp all-in-one marketing platform.
Keywords help search engines gauge the relevance of your content and surface it on SERPs, but they don’t directly translate to clicks or traffic. Search intent is what Google prioritizes most heavily, so picking words that reflect the true intent behind a query and placing them in your title, description, and throughout the body of an article tends to drive more organic traffic than dropping a keyword in once at the start.
What is on-page optimization?
On-page optimization means tuning individual web pages on your site to improve search engine visibility. It covers updating title tags and meta descriptions, adding keywords into internal links, and optimizing image alt text.
To optimize a page for search, start by identifying the keywords your target audience uses to find what you offer. Those words should anchor your content and appear prominently in the title tag, meta description, and URL, and they should also be used in image alt tags.
On-page SEO is a strong way to lift rankings and attract more visitors, but it is only one part of an overall SEO "trilogy." To maximize return on investment, all three parts need equal time and attention.
What is off-page optimization?
Off-page SEO is the practice of building and promoting your website to increase its visibility in search engines. Tactics like link building, social media marketing, and public relations (PR) create breadcrumbs for internet users to follow, which can lift a site’s search engine ranking.
Search engines such as Google rely on off-page SEO factors to gauge a website’s relevance and quality, factors that sit outside the page itself. Those signals often carry more weight than on-page factors. For instance, if one wedding website has more backlinks than another, it tends to outrank that competitor in search results.
Off-page optimization matters because it tells search engines that your site is valuable and authoritative. In practice, it is the easiest way for Google to recognize your expertise, authority, and trustworthiness (E-A-T).
How does link building fit in?
Links are one of the primary factors in search engine ranking. They let Google and other search engines discover new content while signaling its quality, the way Wikipedia accumulates external links pointing back to it. Over time, search engine algorithms have gotten smarter, so linking strategies that rely on "black hat" tactics can actually hurt rather than help your site’s ranking, and they should be avoided.
Building links comes down to creating useful, valuable content that other websites want to link to, such as blog posts, infographics, or videos. You can also reach out to other websites and ask them to link back, and tools such as Semrush can help identify prospects. Another tactic is creating link roundups, which are lists of links from blogs in your industry that other bloggers may link back to.
FAQ
What is the difference between on-page and off-page SEO?
On-page SEO covers changes you make to individual pages on your site, including title tags, meta descriptions, internal links, and image alt text. Off-page SEO covers what happens outside your site, such as backlinks, social media marketing, and PR, which signal relevance and authority to search engines and often carry more weight than on-page factors.
Why are keywords important if they don’t directly bring traffic?
Keywords help search engines understand the relevance of your content and surface it on SERPs, but they don’t turn into clicks on their own. Google prioritizes search intent, so keywords that match what users actually want, placed in the title, description, and throughout the article, tend to drive more organic traffic than a single mention at the top.
Are all link building strategies safe to use?
No. Search engine algorithms have become smarter over time, and linking strategies that rely on "black hat" tactics can hurt rather than help a site’s ranking. Safer approaches include publishing useful content that other sites want to link to, reaching out to prospects identified with tools such as Semrush, and creating link roundups from blogs in your industry.