Table of contents
The difference in one line
With Google Ads you pay to appear at the top of results immediately: stop paying, you disappear. With SEO you work to appear among the unpaid results: it takes time, but the position stays even when you stop investing.
Put that way, SEO sounds always preferable. It is not, and the reason is that the two answer different needs: one solves a problem today, the other builds a position for the years ahead.
When Google Ads makes sense
Paid advertising fits recognisable situations.
You need results now. A newly opened business, a season about to start, a product to launch: SEO will not arrive in time. Ads will, within hours.
You want to test before investing. Not sure whether a service has a market in your area? Two weeks of ads tell you how many people actually search for it and what words they use. That is market research at low cost, producing real data you can then use to shape the organic work.
You work in concentrated periods. A seasonal hotel, a shop with peaks around holidays, an event: ads switch on and off when needed.
Your margin supports the cost. If an acquired customer is worth a few thousand euros, paying a few euros per click makes sense even at modest conversion rates. If you sell fifteen-euro products on thin margins, the maths gets difficult.
When SEO makes sense
Organic ranking is the right investment when time is on your side.
Your sector has steady searches. If every month there are people looking for what you do, a good position brings continuous enquiries with no cost per click. That is the case for most professional and trade services.
You can wait a few months. First movements usually show after two or three months, consistent results after six or more. If that wait is sustainable, the investment pays far better than advertising over the long run.
You want to build authority. Appearing among organic results communicates something different from an ad: many people trust what Google shows "because it is relevant" more than what someone paid to place there.
You work in a territory. Local SEO — appearing in "near me" searches, in maps, in searches that include a town name — is often the most effective route for a business serving a specific area.
The two work better together
The opposition between them is partly artificial: in practice they reinforce each other.
Ads give immediate data on what people search for and which words convert: valuable input for steering SEO work, which otherwise proceeds on assumptions. Meanwhile SEO grows and, as organic positions improve, advertising spend on those same searches can be reduced.
A pattern that works well: start with targeted ads to generate enquiries straight away, use what you learn to build the right content, and after six to twelve months the organic side carries a growing share of the traffic.
What they really cost
Figures floating around online are rarely useful, because they depend on the sector. Some concrete reference points.
Google Ads: cost per click varies enormously. In low-competition sectors it stays under a euro; in crowded ones such as insurance, legal or home improvement it easily passes three or four euros. Add management on top: a campaign left alone burns budget quickly.
SEO: you do not pay per click but for work — analysis, content, technical fixes, monitoring. The investment is concentrated in the early months and then stabilises. Cost per enquiry tends to fall over time, the opposite of advertising.
The right question is not "what does it cost" but what a customer is worth to you. If an average job brings you two thousand euros in revenue, spending three hundred to win it is good business. If it brings fifty, it is not.
When neither is the answer
This part is rarely said out loud, but it comes up more often than you would think.
If your site does not convert, do not send traffic to it. Sending visits to a site that does not explain what you do, has no visible contact details or takes eight seconds to load means paying to drive people away. Fix the site first, then bring traffic.
If your market is not on Google. Some highly specialised B2B businesses have no meaningful search volume: customers come from trade fairs, word of mouth and direct relationships. In those cases LinkedIn or technical industry content pays better.
If you cannot handle the response. Generating twenty enquiries a month when you can serve five does not help: it just creates unhappy customers and bad reviews.
How to decide in practice
Three questions, in order.
How long can you wait? If the answer is "I need revenue within the month", SEO alone is not it. If it is "I want to build something solid", it is.
What is a customer worth? High value justifies cost per click; low value needs volumes that usually only organic can sustain affordably.
Is your site ready? If it is not, that is where the first spend goes. You can check in thirty seconds with our free tool: speed, technical health and clarity are the prerequisites for any later investment.