This article explains the mechanics of Google Ads without the sales pitch: how the auction runs, what decides whose ad comes first, what Quality Score means, which campaign type suits which business, and how to set up a first account you'll still understand six months from now.
In short
Google Ads isn't ad space you rent for a month. Every time someone types something into Google, an auction runs among the advertisers whose keywords match the search. It takes a fraction of a second, and the searcher never sees it.
For example "stainless steel railings price".
It considers keywords and match types, location, language, time, device and campaign budget. An ad that doesn't fit the settings never enters the auction.
Ad Rank is a score that combines the bid, the quality of the ad and the landing page, and several other factors.
Ads below Google's quality threshold aren't shown, whatever they bid. The rest are ranked by Ad Rank.
With Search ads you pay for the click, not the impression. That's why it's called PPC, pay per click. More in our article what PPC advertising is.
The first practical consequence: the same keyword can behave differently in two searches, because every auction is different. The average cost per click in your report is an average of many different auctions, not a fixed price.
In its help pages Google lists what affects Ad Rank: your bid, the quality of your ads and landing page, Ad Rank thresholds, the competitiveness of the auction, the context of the search (location, device, time, other searches) and the expected impact of assets such as sitelinks or a call button.
One statement from Google matters most here: with highly relevant keywords and ads, you can win a higher position at a lower cost. An advertiser with a good ad and a page that answers the search can beat one who bids more but sends people to a general homepage.
Thresholds are the less familiar part. For each search, Google sets a minimum quality below which an ad won't show. For searches with clear purchase intent and for sensitive topics the thresholds are higher. So an ad with low quality can stay hidden even with a high bid and plenty of budget.
This is also why we don't blindly raise bids when an ad slips down. First we check whether the problem is the ad or the page. If it is, a higher bid only buys a dearer click for the same poor result.
Quality Score is a number from 1 to 10 that Google shows for each keyword. Google describes it as a diagnostic tool that shows how your ad quality compares with other advertisers. And it says explicitly: Quality Score is not an input in the auction. The auction uses quality calculated at the moment of the search; Quality Score is a summary of it for you.
It has three components. Each is rated "Above average", "Average" or "Below average", compared with advertisers whose ads showed for the same searches over the last 90 days.
| Component | What it measures | What moves it in practice |
|---|---|---|
| Expected CTR | How likely the ad is to be clicked when shown | A headline that repeats the words of the search. A price or concrete offer in the ad. Assets that take up more space. Excluding searches that have nothing to do with you. |
| Ad relevance | How well the ad matches the intent of the search | Tighter ad groups. If "stainless steel railings" and "driveway gates" share an ad group, one ad can't answer both well. |
| Landing page experience | How relevant and useful the page is for people who click | A page for the topic of the search, fast loading on mobile, a clear offer above the fold, contact details without searching. |
Components and scale from Google Ads Help, status October 2026. The "what moves it" column is our practice.
Two notes from practice. Keywords with competitors' names will always score low, because your ad isn't what the searcher was looking for. That's not a fault to fix. And don't chase the score. A keyword with a score of 6 that brings enquiries at an acceptable price beats one with a 9 that brings nothing. What the page needs is covered in our guide to the Google Ads landing page.
The match type tells Google how close a search has to be to your keyword for the ad to show. Google now describes them by meaning, not by exact word order:
[steel railings]: the ad can show on searches with the same meaning or intent."steel railings": the ad can show on searches that include the meaning of the keyword.steel railings: the ad can show on searches related to the keyword. It's the default.steel railings price
metal balcony fence
Google's help pages say Smart Bidding is essential with broad match. We follow that rule to the letter. Broad match without working conversion tracking and Smart Bidding is the most common cause of spend without enquiries that we find when we take over an account.
Because Google matches by meaning, you don't need every plural and misspelling as a separate keyword. You do need separate keywords for different intents, for example "steel railings price" and "steel railing installation". In smaller European languages with many word endings, such as Slovene, Polish or Czech, this saves even more work, because the grammatical forms of a word are treated as the same topic.
If you switch on AI Max in a Search campaign, Google extends matching even further beyond your keywords and can adapt ad text and landing pages. That makes sense only once the campaign has reliable conversions.
When you create a campaign, Google offers several types. For a small or mid-sized business, one or two usually matter at the start.
| Campaign type | Where it shows | Who it suits |
|---|---|---|
| Search | Text ads in search results | Almost every business. The first choice for services, B2B and local businesses, because it reaches people already looking for a solution. |
| Shopping | Products with image and price in search and the Shopping tab | Online stores with a working Merchant Center account. |
| Performance Max | All Google channels from one campaign | Stores and businesses with enough conversions and good tracking. Add a brand exclusion, or it will claim credit for searches for your name. |
| Demand Gen | YouTube, Discover, Gmail | Businesses that want to create demand among people who aren't searching yet. Replaced Video action campaigns from April 2025. |
| Video | YouTube | Brand awareness, when you have a good video. |
| Display | Banners on websites and in apps | Mainly remarketing to past visitors. Rarely worth the money as a first campaign. |
| App | Search, Google Play, YouTube and others | Only businesses with a mobile app. |
| Smart | A simplified campaign with few settings | Very small businesses with no time to manage ads. Control is limited, so we don't recommend it if you want to know what you're paying for. |
Campaign types from Google Ads Help, status October 2026.
Bidding is how Google sets your bid in each auction. Smart Bidding adjusts the bid for every search, based on how likely the click is to end in a conversion. The main strategies:
Smart Bidding learns from conversions. For some strategies Google states exactly how many it needs:
Source: Google Ads Help on target ROAS, target CPA and Smart Bidding learning, status October 2026.
The "Learning" label misleads people. When it disappears, the strategy hasn't necessarily learned. In the same help pages Google says performance usually settles within one to two conversion cycles, and recommends evaluating after two cycles or two weeks, whichever is longer. For a B2B company where two weeks pass between click and enquiry, that's a month or more.
Our rule for a new account: start with Maximize conversions without a target, once tracking has been checked. Add a target CPA or ROAS after a few weeks of stable conversions, and set it close to the actual average, not the number you'd like to see.
In Google Ads you set the budget as an average daily amount per campaign. On a single day Google can spend up to twice that amount when traffic is higher, but over a whole month no more than 30.4 times the daily amount. A day with double spend isn't a mistake.
Work out how much you need from two figures: roughly what one conversion costs in your sector, and how many conversions a month the strategy needs to learn. Round numbers for illustration, not an average for any sector:
If that number is higher than your budget, you have three options: fewer campaigns that share data, tracking an additional conversion closer to the top of the funnel (a call as well as a form, for example), or a strategy that doesn't need a target. Splitting a small budget across five campaigns is the worst choice. Budgets and our management fees are explained in detail in what Google Ads costs.
Google Ads has four levels. An account contains campaigns. A campaign sets budget, location, language and bidding. A campaign contains ad groups, and each ad group has keywords, ads and a landing page that cover one topic.
The example is modelled on a fencing company because the structure is easy to follow. For Hiša Kovin, a Slovene maker of metal fences and gates, landing pages per product (stainless steel railings, panel fences, driveway gates) were part of a website rebuild that, together with Google Ads and SEO, brought around 1,000 enquiries in the first year. For a service business, swap products for services; for B2B, swap them for the problems you solve.
Setting it up in practice:
Conversions should be a submitted form, a call and a purchase. Without them Google doesn't know what you're looking for.
Searches for your name are cheap and convert well. In the same campaign as everything else, they inflate results and hide whether ads are winning new customers.
If a topic has no page, that's the first job for the website, not for the ads.
Switch on broad once the campaign has reliable conversions and Smart Bidding.
The default "Presence or interest" also shows ads to people outside your area who are only interested in it. Near the Austrian border, that can also add Google's 5% Austrian surcharge to clicks you didn't want.
In multilingual markets such as Switzerland or Belgium, split by language, with ads and landing pages to match, rather than mixing languages in one ad group.
Exclude what isn't yours and add good terms you don't have yet.
If you'd rather we set up and run the account, see how we work on our Google Ads page, or look at the results we've achieved for clients.
Not necessarily. Google says that with relevant keywords and ads you can get a higher position at a lower cost.
Don't treat the score as a goal. If all three components are "Average" or "Above average", the keyword is fine. If one is "Below average", you know where to look: expected CTR in the ad itself, ad relevance in how the ad group is built, landing page experience on the page. Keywords with competitor names will always score low, and that's expected.
Yes. For a small business with one or two Search campaigns it's manageable if you set aside a few hours a month and get tracking right. It gets harder with Shopping and a large catalogue, with Performance Max, and in B2B, where you need to feed back to Google which enquiries became deals.
Ads can show the same day they're approved. According to Google, Smart Bidding performance usually settles within one to two conversion cycles, so draw your first serious conclusions after two cycles or two weeks, whichever is longer.
Usually for each language, and often for each country, because budgets, prices and delivery terms differ. In multilingual countries such as Switzerland or Belgium, run one campaign per language rather than one per country, with ads and landing pages in that language.
We check settings, conversion tracking and search terms and show where budget leaks. Free, no commitment.