What is SEO and why do I need it for my website?

min read

What is search engine optimisation (SEO)?

Plain and simple, search engine optimisation is the process of making improvements on and off your website in order to gain more exposure in search engine results. And more exposure in search engine results will ultimately lead to more visitors finding you for the right reasons.

In order to understand what improvements will affect search engine results, let’s take a step back and understand the goal of the search engines themselves.

At the heart of it all, search engines are just trying to find and understand all the content out there on the Internet, and then quickly deliver relevant and authoritative results based on any phrase the user might be searching for.



First, let’s talk about relevance. When a user searches for something like “WordPress Newcastle”, search engines want to show a list of results that are relevant to the topic of “WordPress Newcastle“.

Search engines will analyse all of the web pages they have ever visited, and pick out the pages that they believe are the most relevant to “Newcastle WordPress Expert“.

They determine this by evaluating lots of different factors, including how your content is written and implemented in code, as well as how other websites around the Internet are linking to you.

And all of this is stuffed into a very big, very complex, and very established index. In a fraction of a second, the search engine is then able to use complex algorithms to rank and display all of those web pages in order of relevance to that phrase that the user just typed in, “WordPress Newcastle“.

Long-tail keywords: Longer queries, typically those containing more than three words. Indicative of their length, they are often more specific than short-tail queries. For example “WordPress Theme Designer in Newcastle“.

This is very important to understand because search engines make a very clear distinction between content that’s about “WordPress Newcastle” versus content relevant for other phrases, like “WordPress Developer Sunderland“, or a phrase like “WordPress Designer near me“.

Search engines are able to understand quite a bit about semantic and thematic connections between words and concepts. Take another example search query, “dog collars”.

A search engine knows that pages selling dog collars are extremely relevant to that search query. But it also knows that websites about pet carriers are very relevant, too. And it knows that a website promoting things like pet food or dog toys might also be relevant to the search query, but perhaps to a lesser extent.

seo relevance


The other factor that influences search engine exposure is the website’s authority.
In other words, out there on the largely lawless World Wide Web, where anyone can post anything, is your website a trusted place on the Internet that the search engines would want to show to their users?

One very common way that search engines determine the authority of a web page or a Domain is by evaluating what other websites link to you, and this can be measured through not only links out there that are pointing to your website, but also, and this is especially important if you’re a local business or selling a product, reviews and what people are saying about you on the Internet, a category collectively referred to as sentiment.

You can think of links as a vote on the Internet. A web page linking to your website is almost like saying, “hey, I trust your content enough that I’m willing to reference your page and possibly even send my traffic to your website”.

It’s a vote of trust, and the search engines pick up on this as they scour the Web, reading, evaluating, and storing all the data they can find on all the pages of the Internet.

But it’s important to know right from the start that this is not just a popularity contest where you try to accumulate the most votes or links on the Internet.

seo authority stage

Quality and Trust

Search engines have safeguards in place to prevent this kind of abuse, and instead, place an emphasis on the quality and relevance of a link.

For example, a search engine is more likely to trust a link if it comes from a well-respected or industry-related website, like an industry-leading blog or a charity or a government agency involved in your field of work.

If you were the owner of that “WordPress agency“, you may have links from review sites, local Chambers of Commerce, or clients they’ve previously created work for.

All that is pretty relevant. A link coming from a one-month-old website that has nothing to do with you or your industry right above some text that says “I’ll link to anything you want for £5” is not going to be valued nearly as much.

In fact, that could get your site tossed from the results pages altogether!

From the search engine’s perspective, some links are more effective than others in casting their vote to your website and determining your website’s authority.

So you might think of this whole system as a weighted democracy, where some votes are worth more than others.

seo building relevance and authority


Understanding how important both relevance and authority are to a search engine will help you to understand and improve these factors, and will ultimately lead to better search engine exposure and more visitors to the pages of your websites.

If you’d like more specific advice, tailored to your website or business needs, please do get in touch.

Caroline Hagan

Caroline brings over 15 years as a Designer and Developer; featured in .NET magazine, the only woman in the UK accredited for Google Mobile Sites. A business mentor with Enterprise Nation, STEM Ambassador and Google Women Techmaker Ambassador Previous client projects include Blackberry, FIAT, Clark Shoes and Sky.