The short answer
Most businesses need both — but in different proportions and at different times. Ads are fast customers for money. SEO is customers who over time come without paying for every click. The question is not "which to choose" but "where to start and how to shift the budget gradually".
Comparison
| Paid search ads | SEO | |
|---|---|---|
| First customers | The day after launch | From a few weeks to months |
| What you pay for | Every click | Work on the site; clicks are free |
| If you stop | Customers disappear at once | Positions hold for a long time while the site is healthy |
| Control | You choose searches, copy, budget | Google decides positions |
| Visitor trust | Some people skip ads | Regular results feel like a recommendation |
| What the site needs | A fast page where everything works | The same — plus pages for searches and Google's trust |
Note the last row: you need a working site either way. Ads don't save a broken site — they just bring people to broken pages faster.
When ads pay off more
- A new business or a new site. SEO hasn't delivered yet, and you need customers now.
- Promotions, seasons, launches. You need people on specific days — organic search can't do that.
- Testing demand. Before investing in SEO for a new service, a week of ads tells you whether anyone searches for it and buys.
- Searches where competitors dominate organic results. Until your pages reach the first page, ads are the only way to be there.
When SEO pays off more
- Steady demand. People search for your service every month — there is no point buying each of them every month.
- Expensive clicks. In medicine, legal services and repairs a click costs real money. Every organic visitor is a click price saved. How to calculate exactly how much is covered in the article on organic traffic.
- "How", "what is", "how much" questions. People click ads less on such searches and readily read explanations. A page with a good explanation brings people who are still choosing and builds trust in you.
- Searches for your company name. Paying for people who are already looking for you specifically is the most annoying expense.
How to combine them
Ads and SEO work best together:
- Ads tell you which pages to build for SEO. The "Search terms" report in Google Ads shows which words people click and convert on. That is a ready list of topics for site pages.
- SEO lowers the cost of ads. Google rates landing page experience. A fast site where everything works and the page answers the query gets a better rating — and with it a lower cost per click.
- The budget shifts gradually. When a page steadily ranks on the first page of organic results for a search, you can lower bids on that search and watch whether leads drop.
Why both need ongoing monitoring
A website is not a sign you hang up and forget. It keeps changing:
- a content manager deleted the page your ads led to;
- a plugin or theme update broke the price structured data;
- after a redesign some old addresses were left without redirects;
- someone added another widget and the mobile version got slower;
- Google changed the rules and competitors built better pages.
Each such small thing quietly eats both organic positions and ad budget. Worst of all, the owner finds out months later — from a drop in leads. That is why both ads and the site's technical health are worth checking regularly, not once every few years.
That is what my "Monitoring" package is for: regular site checks and an alert when something breaks — before it has cost you customers.
What to do before deciding
- Check the pages your ads lead to. Do they open, how fast, do the buttons work — here is how to check speed.
- See what share of customers organic search already brings — in Google Analytics, the Organic Search channel.
- Compare the cost per click for your main searches with what it costs to build a good page for them.
If you want to understand what SEO consists of, start with What is SEO, in plain words.