In my line of work, I’m often asked, “What is this SEO thing I’ve been hearing a lot about, and why should I care about it?” These days, businesses already have to worry about website design and social media, so most business owners may not even be aware that search engine optimization (SEO) is a thing. If this sounds like you, then this guide might be of some help.

What is SEO?

Simply put, SEO is the process of optimizing your website in order to get organic or unpaid traffic from search engines like Google or Bing. It increases both the quality and the quantity of traffic to your site.

This means making changes to your website’s content and design that will make it rank highly on different search engine results pages. But why should you care about your website being the top result on Google? Why is generating organic traffic better than paying for ads?

The Internet’s Librarians

Imagine that you are one of the librarians for the most complete repository of knowledge and data that humanity has ever created. Imagine that millions of people come to you every day looking for information on a specific subject—for example, on Nietzsche or the Oscars or how to cook the perfect steak.

In order to help each person find the information they are looking for in a fast, efficient manner, you will need to know a bit about what each book in your library is about. You also need to arrange all the books according to some type of system—perhaps alphabetically, year of publication or by topic or keywords.

Search engines act like the internet’s librarians. They try to match the user’s search terms with the most relevant information in their database, and we need to understand how they do this in order to understand why SEO is so important.

How Search Engines Work

Search engines work in three steps. First, they send crawlers through all available content on the internet—webpages, images, audio, video and so on. Crawlers are bots that send snapshots of all accessible content back to the search engine’s servers.

Next, the information is organized into a searchable list. This huge list is called a search index and can serve as the basis for a raw keyword search. But good search engines like Google and Bing go one step further.

These search engines rank all the pieces of content relevant to a searcher’s query, using an algorithm to order the generated list from most relevant to least relevant. These algorithms are always changing, with Google, in particular, making constant adjustments.

Search engines that consistently deliver relevant results gain repeat users. These loyal users learn to depend on that search engine above all others. Recent data shows that Google and Bing make up almost 85% of all internet searches. This indicates a high level of user trust in these search engines.

Getting Ranked

Recent market share statistics show that most people begin their online experiences through a search engine. That’s why it is important for your website to rank highly on search engines: A high rank indicates high relevance, and high relevance brings trust in your brand and your website.

Google determines its ranking through a mix of hundreds of different ranking signals, but three have remained consistent: quality on-page content that satisfies the searcher, links pointing back to your site, and RankBrain, which uses artificial intelligence to simulate a human “gut feel” approach to interpret difficult searches.

Content Marketing

Google and Bing employ metrics such as clicks, page views and time on page to measure the levels of user engagement throughout your website, which indicate how satisfied users are with the information they find on your site.

The more quality—and, therefore, more relevant—content you have on your site, the higher your pages are more likely to be ranked by the search engines. Good content makes satisfied users!

Links To Your Site

Another way search engines measure a website’s relevance is by external sites that link to it. The quality of the backlinks is just as important as quantity, as search engines will ban sites that attempt to spam backlinks.

A better way to build backlinks is to build relationships with the community. Fans and other satisfied users will link back to your website when they write about it and mention it on social media. This builds organic backlinks that are far more valuable than a hundred spam links generated by bots. Quality content is more likely to be shared.

SEO Versus Paid Ads

So, why use SEO instead of other methods of increasing traffic, such as paid ads? After all, Google itself offers a paid AdWords system where advertisers bid on keywords.

It helps to return to the library metaphor we used earlier. Imagine a book’s publisher launching a multi-million-dollar marketing campaign to increase awareness of a new book about, let’s say, building birdhouses. There are television ads and radio spots, print ads in newspapers and Google AdWords for the keyword “how to build birdhouses.”

These campaigns may boost sales of the book temporarily, but eventually marketing campaigns end, and the next clueless nest box enthusiast will have to go down to the local library and ask a librarian to recommend a book on building birdhouses. This librarian will most likely recommend a book that has satisfied previous birdhouse queries before, whether it was a bestseller when it was first released or not.

That’s the beauty of SEO and why it is the foundation of any small business marketing plan. It may take some upfront time and investment to set up properly, with quality content and a network of organic backlinks. But a well-designed website that follows the principles of SEO will continue to generate a steady stream of organic leads and traffic for your business, for free.