The short answer
PPC buys visibility today and stops the moment you stop paying. SEO earns visibility slowly and keeps working after the work is done. If you have the budget, run both: ads cover the months SEO needs, and the ad data tells SEO which searches actually turn into customers.
How each one works
PPC (pay-per-click) is an auction. You bid on searches in Google Ads, and you pay each time someone clicks. Some trades can also run Local Services Ads, which charge per lead instead of per click.
SEO is earning a place in the unpaid results: the regular listings, the map pack, and increasingly the sources cited in Google AI Overviews and AI assistants. You do not pay per visit. You pay for the work that makes your pages the most relevant, useful and trusted answer.
Speed
Ads can run the day the account is approved. SEO fixes that remove a technical block can show within a few weeks of Google recrawling the page. Ranking for competitive searches usually takes three to six months, and longer in crowded markets.
Cost structure
- PPC is rent. Cost per click rises with competition, and traffic falls to zero when the budget runs out.
- SEO is closer to owning. The cost is mostly fixed work, so the cost per visit tends to fall as the pages gather traffic. It is not free: pages need upkeep, and competitors keep moving.
- Both need tracking. Compare them on cost per qualified lead in the same GA4 setup, not on clicks or impressions.
Where each one wins
- PPC: a new business with no search history, a seasonal push, a promotion with a deadline, testing whether a new service has demand, and emergency searches where the top of the page is all ads.
- SEO: services people research before they buy, searches you will want to win for years, local map results, and being the source AI answers quote.
Using them together
- Read the search terms report in Google Ads. Searches that turn into calls are the first pages SEO should build.
- Use ad copy tests to learn which headline gets the click, then use the winner in your title tags.
- Once a page holds a top organic spot, test cutting the bid on that search and watch total leads, not just ad clicks.
- Send both channels to pages built for the search, not to the home page.
What I would do in your position
- Need leads this month: start with PPC on your highest-intent searches and fix the landing page first.
- Tight budget, can wait: put it into SEO and your Google Business Profile.
- Both: run ads on proven searches while building pages for them, then shift spend as organic positions hold.
See PPC management, SEO, or start with a free audit.