SEO, or Search Engine Optimization, is the process of improving a website so that search engines can better understand its content and people can find it through relevant searches.
For a business or website owner, SEO can help increase visibility in search results, attract relevant visitors and make it easier for people to discover useful pages on your website.
SEO is not about using tricks to force a website to the top of Google. Good SEO is about creating a website that is useful, accessible, understandable and relevant to what people are searching for.
SEO stands for Search Engine Optimization.
It covers the different activities involved in helping search engines discover, understand and evaluate the pages on a website.
SEO can involve many areas, including:
These areas work together rather than operating as completely separate parts of SEO.
Search engines need to discover webpages, understand what those pages are about and determine which pages may be useful for a particular search.
Although search engines use complex systems and many different signals, the process can be broadly understood through three stages:
Search engines use automated programs, often called crawlers or bots, to discover webpages and follow links between pages.
A good website structure and useful internal links can make it easier for search engines to discover important pages.
After discovering a webpage, a search engine may analyse and store information about that page in its index.
If a page is not accessible or cannot be properly processed, it may not be available to appear in search results.
When someone performs a search, the search engine determines which available pages are most relevant and useful for that particular query.
The order of results can vary depending on the search, the content available and many other factors.
People often use search engines to find information, products, services and businesses.
If your website does not appear when people search for topics related to your business, you may miss opportunities to reach potential visitors.
SEO can help your website become more discoverable for relevant searches.
For example, a local business providing landscaping services may want to appear when people search for landscaping services in its area.
A website selling running shoes may want to appear for searches related to running shoes, shoe types and related questions.
The goal is not simply to attract more visitors. The goal is to attract relevant visitors who are actually interested in what the website provides.
SEO includes several important areas. The exact priorities will depend on the website and its goals.
Keyword research involves understanding the words and phrases people use when searching for information, products or services.
It can help you understand what your audience is looking for and identify topics your website should cover.
Learn more in our How to do Keyword Research guide.
On-page SEO involves improving elements of individual webpages so that their content is clear and useful for visitors and search engines.
This can include headings, page titles, content, internal links, images and other page elements.
Our On-Page Optimization Techniques guide covers practical on-page SEO improvements.
Technical SEO focuses on the technical aspects of a website that can affect crawling, indexing, performance and accessibility.
Examples include website structure, XML sitemaps, robots.txt, page performance and other technical factors.
See our How to do Technical SEO guide for more information.
Content SEO focuses on creating useful content that addresses the needs of your audience and matches the intent behind relevant searches.
Good content should provide genuine value rather than simply repeating keywords or trying to reach an arbitrary word count.
Links can help search engines discover pages and understand relationships between different webpages.
External links from other websites, commonly called backlinks, can also be an important part of SEO.
However, quality and relevance are more important than simply trying to collect large numbers of links.
Read our Link Building Strategies guide to learn more.
Local SEO focuses on improving visibility for searches connected to a specific location.
This can be particularly important for businesses that serve customers in a particular city, region or local area.
Learn more in our Why Is Local SEO Important? guide.
A keyword is a word or phrase that represents what someone is searching for.
For example, someone looking for information about improving website speed might search for phrases such as "how to improve website speed" or "website speed optimization".
Keyword research helps you understand these searches and decide which topics are relevant to your website.
However, modern SEO should not be reduced to inserting keywords into a page as many times as possible.
Keywords should be used naturally and in a way that helps explain the subject of the page.
Search intent refers to the reason behind a person's search.
Someone searching for "what is SEO" is probably looking for an explanation or educational information.
Someone searching for "SEO audit service" may be looking for a service.
Understanding this difference can help you create the right type of page for the search.
A page can contain the right keywords but still perform poorly if it does not provide the information or experience that the searcher actually wants.
On-page SEO involves improving the content and elements of individual webpages.
This can include:
The purpose is to make the page clearer, more useful and easier for both visitors and search engines to understand.
Technical SEO focuses on the technical foundation of a website.
It can include areas such as:
A technically sound website makes it easier for search engines to access and process its important pages.
A backlink is a link from another website to your website.
Backlinks can help search engines discover content and can be one of the signals considered when evaluating websites and webpages.
However, not every backlink has the same value.
Relevant, natural links from legitimate websites can be more useful than large numbers of unrelated or low-quality links.
You can use our Backlink Checker to get a quick overview of backlinks associated with a domain.
No.
SEO cannot guarantee a specific position in search results.
Search engines use complex systems to determine which pages appear for different searches, and competitors are also continuously improving their websites.
A good SEO strategy should therefore focus on improving the overall quality, relevance and accessibility of a website rather than promising a particular ranking position.
SEO is generally a long-term process rather than an instant solution.
The amount of time required to see meaningful changes can vary considerably depending on the website, competition, industry, content, technical condition and other factors.
Some improvements may be noticed relatively quickly, while broader organic visibility can take considerably longer to develop.
For this reason, SEO should be approached as an ongoing process of improving and measuring the website rather than a one-time task.
If you are new to SEO, start with the fundamentals rather than trying to change everything at once.
A practical starting point is:
You do not need to complete every SEO task at once. Start with the issues most likely to improve your website and its visitors' experience.
When starting SEO, it is easy to focus on tactics rather than the underlying purpose of SEO.
Some common mistakes include:
A better approach is to create a website that is genuinely useful to the people you want to reach.
Yes. Many basic SEO activities can be completed by website owners themselves.
Free tools can help you investigate different parts of your website, while practical guides can help you understand what the results mean.
Our free SEO tools are designed to help you investigate your website yourself.
If you have a more complex website or would rather have someone help you identify and prioritise SEO improvements, professional SEO services may also be appropriate.
If you are starting with an existing website, begin with the areas that can have the greatest practical impact.
Consider checking:
From there, you can create a prioritised SEO improvement plan rather than trying to fix everything simultaneously.
SEO is the process of improving a website so search engines can better understand its content and people can find it through relevant searches.
Learning and doing many SEO activities yourself can be done without paying for an SEO service. However, websites may also use paid tools, consultants or SEO agencies when they need additional resources or expertise.
Yes. Search engines remain an important way for people to discover information, products and services. SEO helps websites improve their visibility and relevance in search results.
There is no fixed timeframe. Results depend on factors such as the website, competition, content, technical condition and the work being carried out.
No. No legitimate SEO strategy can guarantee a specific Google ranking position.
There is no single task that is most important for every website. A strong SEO strategy combines useful content, relevance, technical accessibility, good website structure and other appropriate SEO activities.
Both are relevant, but content should ultimately serve the needs of the reader. Keyword research can help you understand what people are searching for, while useful content helps satisfy those searches.
Yes. Many SEO tasks can be learned and completed yourself. Free SEO tools and practical guides can help you investigate your website and understand potential improvements.
Now that you understand the basics of SEO, you can explore the next areas in more detail.
Learn How to do Keyword Research, explore On-Page Optimization Techniques, or learn more about Technical SEO.
You can also read our Link Building Strategies guide to learn more about backlinks and link building.
Start with our free SEO tools to investigate your website, identify potential issues and learn more about the areas that can be improved.
Explore Free SEO Tools →