What Are Topic Clusters? Their Importance for SEO
Topic clusters are groups of content on a website that are related to the same topic. They create networks of content where the individual pages, articles or posts contribute to the main topic and link back to it. The purpose is to send a signal to search engines that you have expert knowledge on certain topics.
A solid SEO strategy is essential if you want to stand out from the crowd and compete with your rivals, and topic clusters should be central to your approach. They can help you achieve a better ranking in search results and build your reputation as an expert in your field.
What Are Topic Clusters?
Topic clusters are a method you can use to organise the content on your website or blog into clusters related to the same subject. This creates a network of content where individual pages, articles, or posts contribute to the main subject and link back to it. The goal is to signal to search engines that you have expert knowledge on specific topics.
At the core of each topic cluster is a so-called pillar page, which is a page with in-depth content on a specific subject. This page is linked to several other articles covering more specific topics related to the main subject. In SEO terms, these pages are called supporting pages.
Topic clusters make it easier for search engines, like Google, to understand your website's structure and simultaneously signal that you are an expert in your field. Over time, well-developed topic clusters increase your chances of ranking higher in search engines.
Pillar Pages
A pillar page is the foundation for a topic cluster. It contains an article or blog post that gives the reader a basic understanding of a particular subject. The more specific parts of the topic are only touched upon briefly, as the idea is for the reader to explore them in detail on the supporting pages you add to your topic cluster.
Internal Links
Internal links connect your pillar page to your supporting pages. You cannot build topic clusters without internal links. All the supporting pages you add to your cluster must be linked to your pillar page, which contains the fundamental information about the subject. Your pillar page should also link to your supporting pages. This ensures that Google recognises the content on these pages as related.
Why Are Topic Clusters Important for SEO?
Besides being a smart way to organise your content, topic clusters are part of an effective SEO strategy. By linking related content, you show Google that you are an expert on the topics you write about, which improves your chances of ranking highly in search results.
Topical Authority
In an SEO context, topical authority means that your website is a relevant source of information on a specific subject. Google's algorithm favours websites that provide visitors with in-depth information on topics. When you create topic clusters, you are effectively telling Google that you know a lot about a subject.
For example, if you have built a cluster around the topic of sustainable fashion on your company blog, you will have a better chance of appearing at the top of search results than a competitor who has only written a few randomly selected blog posts about fashion trends.
E-E-A-T
The acronym E-E-A-T stands for Experience, Expertise, Authoritativeness, and Trustworthiness. When Google's search bots analyse the content on your website, they do not just register whether you have good keywords and relevant content. They also take E-E-A-T into account. In other words, they assess whether you have experience, are an expert, are an authority, and are trustworthy on specific subjects. Topic clusters show search bots that you have expert knowledge.
How to Build Topic Clusters
Building topic clusters is not complicated. It just requires you to plan your content logically and conduct thorough keyword research. Get started quickly by following the five steps outlined below.
Step 1: Choose Relevant Topics
Start by selecting a broad topic that is relevant to your business and target audience. This topic will be your main subject, which you will cover on your pillar page. Make sure there is enough substance to the subject so that it makes sense to write articles about related topics on your supporting pages.
Step 2: Do Your Keyword Research
Once you have found a main topic for your pillar page, you need to conduct keyword research to discover which related topics people are searching for online. These are the subjects you should write about on your supporting pages.
Step 3: Plan Pillar Pages and Supporting Pages
Your keyword research should result in three to four related topics you can add to your topic cluster. For example, if you run an online shop selling vegan and vegetarian meal kits, it would make sense to have a pillar page on the main topic "Introduction to vegetarian food" and supporting pages covering more specific subjects like "Easy vegetarian meals," "Vegetarian food in an air fryer," "Vegetarian Thai food," and "Protein-rich vegetarian food."
If your keyword research shows that there are few or no relevant related topics you can write about, you should consider choosing a different main topic for your pillar page. Of course, you can still write about the main topic, especially if it is important for your business, but it will not be part of a topic cluster.
Step 4: Write Content
The next step is to write SEO-optimised content. Make sure your article or blog post provides your target audience with information they actually need or answers their questions. It is important to use the keywords you found in your keyword research naturally. Remember to link the articles to each other. Pillar page to supporting pages and vice versa. The anchor texts, the texts in your internal links, should clearly tell both readers and search engines what the content you are linking to is about.
Step 5: Track Performance
Once your topic cluster is live, you can track performance using analytics tools to ensure that they are attracting a good amount of organic traffic to your website. Keep in mind that most SEO efforts take time to show results. If nothing happens after three months, you can conduct a content audit to find areas for improvement.
A Practical Example
Let us assume you have an online health food shop. You have just expanded your range of gluten-free flour and now you want to improve your website's ranking so your potential customers can find you more easily. You have already set up a blog. On it, you decide to build a topic cluster around the subject of gluten-free baking.
A model for this topic cluster could look like this:
- Pillar page: Complete guide to gluten-free baking
- Supporting page 1: Best types of gluten-free flour
- Supporting page 2: How to bake gluten-free rolls
- Supporting page 3: Gluten-free sourdough step-by-step
By linking the pages in your cluster, you show Google that you have knowledge of gluten-free baking, thereby improving your chances of your content being shown to potential customers.
Expert Perspectives
While topic clusters are part of your SEO efforts, they will also help strengthen your brand by showing your visitors that you are knowledgeable in your field. Customers who are looking for a product often need more information before making a final decision and completing a purchase. Therefore, the articles and blog posts you write to create topic clusters can also positively impact your conversion rate and help you gain loyal customers who trust your company's expertise and industry knowledge.
Final Thoughts
Topic clusters are a smart way to organise your content and signal to search engines that you are an expert in your field. By linking related content, you show Google that you have in-depth knowledge on specific subjects, which improves your chances of ranking highly in search results.
The process is straightforward. Choose a broad topic, conduct keyword research to find related subjects, create a pillar page and supporting pages, and link them together with clear anchor text. Track your performance over time and make adjustments as needed.
When you build topic clusters, you do more than improve your SEO. You build trust with your audience and establish your brand as a credible source of information in your industry.