What is the difference between SEO and paid advertising?

SEO – search engine optimisation – and paid advertising are both ways of getting your business in front of people searching online, but they work in fundamentally different ways and serve different purposes.

SEO is the process of making your website and online presence more visible in organic – that is, unpaid – search results. It involves improving your site’s technical foundations, creating content that matches what people search for, building credibility through links and reviews, and making sure search engines can read and understand your site correctly. SEO takes time to build but, once established, delivers traffic without an ongoing cost per click. It is a long-term asset.

Paid advertising – most commonly Google Ads or social media ads – puts your business in front of people immediately, but only for as long as you are spending. The moment you stop paying, the visibility stops. Paid ads are highly effective for testing, for short-term campaigns, and for targeting specific audiences with precision. They are less effective as a long-term substitute for organic visibility.

For most small businesses and startups, the right approach is to build solid SEO foundations first – so that you own your visibility over time – and use paid advertising tactically on top of that, rather than relying on it as your primary channel. If you are spending on ads but have not sorted your SEO basics, you are likely paying to send traffic to a website that is not set up to convert it.