Many company directors ask the same question: should I invest in SEO or in Google Ads? Both make your company appear on Google. But their logic, their cost and their results over time are radically different. Here is how to choose according to your situation, your budget and your objectives.
What each one really does for your business
SEO means improving where your pages sit in Google's organic results. It is an investment producing progressive but lasting results: once well positioned, your pages keep attracting visitors at no additional cost. Research from Semrush on SEO versus paid traffic shows that organic traffic represents on average 53% of all visits to a website. Google Ads, by contrast, puts you at the top of the results immediately, but only while you pay. As soon as the budget stops, the visibility disappears. To understand the basics of SEO before comparing the two channels, read our SEO guide for freelancers and the fundamentals to put in place now.
When SEO is the right choice for your business
SEO is for you if you have an established business, a site that has been live for more than 6 months, and a results horizon of 6 to 12 months. It is also the better choice if your customers actively search for your services on Google and if you can produce content regularly.
- Your business has existed for more than a year and you want to reduce your dependence on advertising
- Your customers search for your services on Google with precise, local queries
- You can invest 6 to 12 months before expecting significant returns
- You have a solid, fast site whose content can be optimised
- You want to build a lasting asset rather than rent visibility
Quick test: type your main query in a private window. If organic results appear (not only ads), SEO traffic is accessible in your sector. The more well-ranked organic sites there are, the more viable organic search is as an option for you.
When Google Ads is the more intelligent decision
Google Ads makes sense when you need quick results: launching a new offer, testing a market, a seasonal peak or starting a business. It is also the better choice if your SEO is not in place yet and you need enquiries now. Data from WordStream on Google Ads benchmarks by sector shows that the average conversion rate on the search network is 3.75%, twice the average rate of websites. On local, specific queries, small budgets remain very competitive. The Google Ads platform includes a free Keyword Planner that lets you estimate real costs before spending a penny.
Before committing to 6 months: run a Google Ads campaign at €150 to €200 on your main query for 2 weeks. If the cost per enquiry is lower than the margin on your first sale, the demand exists. You will then know exactly what to target in SEO, with real data.
The real difference: buying traffic or building it
The most important distinction between the two is not speed, it is ownership. With Google Ads, you rent visibility. With SEO, you build an asset. Analysis from Ahrefs on SEO versus paid traffic confirms that a page well positioned in SEO generates traffic for years at a marginal cost close to zero once the position is won. HubSpot has measured that the cost per lead from SEO is on average 61% lower than from paid channels over a 12-month horizon. The question is not which is better, it is which matches your current stage of development.
How to combine the two without wasting your budget
Using both at once is not a mistake if you can afford it. The most effective strategy for a small company: launch Google Ads to generate enquiries quickly while SEO is built in parallel, then progressively reduce the ad budget as organic search takes over. Research from Think with Google on how SEO and paid search complement each other shows that companies combining both channels see their overall click-through rate rise by 25% on average compared with those using only one. Use the data from your ad campaigns (which keywords convert best) to prioritise your SEO effort. That is free data on what your customers actually search for.
The tools for measuring and deciding with data
To know where your current traffic comes from and what share is organic versus paid, start with Google Search Console (free). It shows you the queries where you already appear organically and those where you are absent. To assess the difficulty of SEO keywords and the estimated cost of the same queries in Ads, Semrush lets you compare both channels on the same queries: search volume, SEO difficulty, average cost per click. A keyword that is very expensive in Ads but low in SEO difficulty is an opportunity to take organically. For sector statistics on digital investment in France, Statista publishes data that helps you place your own investment in the context of your sector.
Where to start today
Ask yourself one question: do you need results in the next 30 days, or can you wait 6 to 12 months? If you need customers now, start with Google Ads on 2 or 3 tightly targeted queries. If you can wait, invest in SEO now to build a lasting asset. Either way, make sure your destination page convinces: the best channel does not compensate for a page that does not convert.
Whether you choose SEO, Google Ads or both, every euro invested in acquisition is lost if your site does not convince visitors to contact you. Before increasing your budget, read why your website is not generating customers and fix the structural problems that drive your visitors away before sending more traffic to it.