May 19, 2025 — Simon Kelly
SEO is about creating a system, a clear website structure that grows stronger, broader, and more powerful over time.
Great SEO performance isn’t just about optimising a few pages and hoping for the best.
Without the right foundation, even the best content can struggle to perform.
SEO is what connects your website to the right audience, builds your authority in your field, and ensures every new page you publish strengthens your position, not just today, but for the long term.
In this guide, we’ll walk you through how pillar pages, supporting content, and smart keyword planning work together to create a website that not only ranks but also leads.
You’ll see why structuring your site the right way from the start saves you time, avoids messy rework later, and sets you up for stronger, more sustainable results.
Think of your website like a house. Without a strong blueprint— a clear, strategic plan— it doesn’t matter how good your furniture (or content) looks.
The foundation needs to be built to last.
That’s exactly what SEO structure does: it gives your website the framework it needs to grow, rank, and stay competitive over time.
SEO (Search Engine Optimisation) is the process of improving your website so it ranks higher in search engine results.
It’s about making your site easier for search engines to understand and recommend, bringing the right visitors to your pages organically.
When you invest in strong SEO foundations:
It’s not just about ranking a handful of keywords. It’s about building a connected system that earns trust, establishes expertise, and grows stronger with every new piece you add.
A pillar page is a central hub on your website that covers a broad topic in depth, with links to related, more specific supporting content.
Think of it like this:
Pillar pages help you:
They also make your site easier to navigate, giving users a clear path through your content without feeling lost or overwhelmed.
One of the biggest mistakes we see is websites creating random pages, blog posts, and landing pages without a clear SEO structure in place first.
Before you even start writing content, you should:
This content structure helps by:
It’s much easier (and much cheaper) to get this right from the start than to go back and “retrofit” SEO into a messy, disjointed website later.
Strong SEO doesn’t start with a blog post— it starts with keyword research and theme planning.
Here’s what smart keyword research involves:
When you know your themes first, you’re not just creating content— you’re building a strategic content ecosystem that supports your SEO and conversion goals.
Before you draft a single heading or paragraph, you should already know:
That’s how you create content that fits into a larger, sustainable SEO strategy— not just isolated pages that are hard to rank or maintain.
Here’s how we approach SEO structure at SGD:
Sketch out your main topics (pillars) and subtopics (supporting content) before you create any pages. This gives your content purpose and a clear structure from day one.
Keep URLs simple, keyword-rich, and logical (e.g. /digital-marketing/seo-tips/). This helps users and search engines understand where content belongs.
Every supporting page should link back to its pillar page. This signals topic authority to Google and improves user navigation.
Great content always comes first. SEO enhances content visibility but shouldn’t come at the cost of clarity or value.
Your structure should allow for new topics and content without becoming cluttered. Build with scalability in mind.
SEO isn’t a “set and forget” task – it’s a living, evolving system.
When you start with a strong structure, every new page you add makes your site stronger.
Even websites with great content often struggle to rank if they make these avoidable mistakes:
Avoid these early, and you’ll build an SEO foundation that works with you, not against you.
At SGD, we don’t just create websites that look good— we build websites with strong SEO foundations that drive real, lasting growth.
By focusing on smart structures, pillar pages, and theme-first content strategies from the start, you’re not just building a site – you’re building a system that earns trust, drives traffic, and positions your brand as a true authority.
If you’re ready to create a website that’s not only beautiful but built to perform, we’re here to help.
Simon Kelly is the CEO and Head of Growth at SGD. Simon started his first web agency in 2009 which he merged with the SGD team in 2023. With a strong background in digital strategy and a history of working with fast-growing Australian companies, including CyberCX, Envato and Agency Mavericks, he's passionate about using ethical digital marketing that delivers business value. Simon's experience includes coaching digital agencies, running digital marketing workshops, driving growth and excellence within the SGD team.
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