Search engine optimization (SEO) is the process of improving the quality and quantity of website traffic to a website or a web page from search engines.SEO targets unpaid traffic (known as "natural" or "organic" results) rather than direct traffic or paid traffic. Unpaid traffic may originate from different kinds of searches, including image search, video search, academic search, news search, and industry-specific vertical search engines.
What are the three pillars of SEO?
As a digital marketer, knowing how to get your brand, website, or company found by searchers is a core skill, and understanding how SEO is evolving will keep you at the top of your game.
While SEO changes frequently in small ways, its key principles do not. We can break SEO into three core components or pillars that you need to be familiar with – and action regularly:
Technical Optimization: Technical Optimization is the process of completing activities on your site that are designed to improve SEO but are not related to content. It often happens behind the scenes. A simple example of technical optimization is submitting your sitemap to Google.
On-Page Optimization: On-Page Optimization is the process of ensuring the content on your site is relevant and provides a great user experience. It includes targeting the right keywords within your content and can be done through a content management system like WordPress, Wix, Drupal, Joomla, Magento, or Shopify.
Off-Page Optimization: Off-Page Optimization is the process of enhancing your site’s search engine rankings through activities outside of the site. This is largely driven by high-quality backlinks, which help to build the site’s reputation.
How does SEO work?
So how does Google determine which pages to surface in the search engine results page (SERP) for any given query? How does this translate into traffic to your website? Let’s take a look at how SEO works.
Google’s search crawlers constantly scan the web, gathering, categorizing, and storing the billions of web pages out there in its index. When you search for something and Google pulls up results, it’s pulling from its index, not the web itself.
Google uses a complex formula (called an algorithm) to order results based on a number of criteria (ranking factors—which we’ll get into next) including the quality of the content, its relevance to the search query, the website (domain) it belongs to, and more.
How people interact with results then further indicates to Google the needs that each page is (or isn’t) satisfying, which also gets factored into the algorithm. In other words, SEO works like a complex feedback system—to surface the most accurate, trustworthy, and relevant results for any given search using input from you, Google, and searchers. Your role is to produce content that satisfies Google’s experience, expertise, authority, and trust requirements (E-E-A-T), which satisfy its searchers’ requirements.