What is SEO? Search Engine Optimization Explained

What is SEO? Search Engine Optimization Explained

How search engines work

Search engines are like libraries for the digital age.

Instead of storing copies of books, they store copies of web pages.

When you type a query into a search engine, it looks through all the pages in its index and tries to return the most relevant results.

To do this, it uses a computer program called an algorithm.

Nobody knows exactly how these algorithms work, but we do have clues, at least from Google.

 the words of your query, relevance and usability of pages, expertise of sources and your location and settings. The weight applied to each factor varies depending on the nature of your query – for example, the freshness of the content plays a bigger role in answering queries about current news topics than it does about dictionary definitions.

Speaking of Google, this is the search engine most of us use—at least for web searches. That’s because it has the most reliable algorithm by far.

That said, there are tons of other search engines you can optimize for.

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How SEO works

In simple terms, SEO works by demonstrating to search engines that your content is the best result for the topic at hand.

This is because all search engines have the same goal: To show the best, most relevant results to their users.

Precisely how you do this depends on the search engine you’re optimizing for.

If you want more organic traffic to your web pages, then you need to understand and cater to Google’s algorithm. If you want more video views, then it’s all about YouTube’s algorithm.

Since each search engine has a different ranking algorithm, it’d be impossible to cover them all in this guide.

So, going forward, we’ll focus on how to rank in the biggest search engine of them all: Google.

FUN FACT

Google has a market share of ~92%. That’s why it pays to optimize your website for Google instead of Bing, DuckDuckGo, or any other web search engine.