On this page
- Google Ads explained: the product you log into
- How Google Ads works, from search to auction
- Paid results and organic results, with Google Ads examples
- What Google Ads does at UK scale
- Google Ads for beginners: what you can run yourself
- What Google Ads does badly when nobody is watching
- What Google Ads can be held to
- Sources
Somebody has told you to use it, or a supplier has quoted for it, and the question underneath is simpler than either conversation allows: what is Google Ads, and is it a thing you buy or a thing you do?
It is both, and that is why the answers you have been given sound like they are about different subjects. Google Ads is a product with a login. It is also a service somebody can be paid to operate on your behalf.
The pricing model underneath it has its own name and we have written about pay per click separately. This post is about the product itself.
Google Ads explained: the product you log into
Google Ads is an advertising platform run by Google. You open an account, tell it what you sell, where you sell it and how much you are willing to spend, and it shows your advert to people searching for related things.
It was called AdWords until 2018, so older articles and older accountants may still use that word for it. The account structure is the part worth learning, because every conversation about the work happens in those terms.
Inside the account sit campaigns. A campaign holds a budget, an area and a type. Inside a campaign sit ad groups, and each ad group holds a small set of related keywords and the adverts written to answer them.
The campaign types you will be quoted for
The types are worth naming plainly, because a quote that does not say which one it means is a quote you cannot compare with another.
| Campaign type | Where it appears | What it needs from you |
|---|---|---|
| Search | The text results at the top and bottom of a Google search page | Keywords and written adverts |
| Performance Max | Across search, maps, YouTube, Gmail and the display network at once | Images, text, a feed or a goal, and a tolerance for less control |
| Display | Banner slots on other people's websites and apps | Artwork and an audience |
| Video | Before and during YouTube videos | A video, and something for it to ask |
| Shopping | The product tiles with prices above the search results | A product feed from your shop |
A local service business almost always starts and often stays with search.
How Google Ads works, from search to auction
Nothing is reserved. Every time somebody types a search, Google runs an auction for the advertising slots on that page, and it runs a separate one for the slots at the top.
Your entry into that auction is scored on your bid, on how relevant your advert and your page are to what was typed, and on the context of the search itself. Google publishes the ingredients under the name Ad Rank.
Two consequences follow, and both surprise people. Your position can change between one search and the next, because a different set of advertisers turned up. And a higher bid does not settle it, because relevance is scored alongside the money.
You are charged when somebody clicks, not when the advert appears. What one click ends up costing is a longer story and we have taken it apart properly.
Paid results and organic results, with Google Ads examples
This is the distinction most people arrive without. A Google results page carries two kinds of listing, they look increasingly similar, and they are earned in completely different ways.
The paid ones are labelled Sponsored and sit at the top. They are there because somebody is paying for that click. The organic ones underneath are there because Google's ranking judged the page worth showing, and no money changes hands for them at all.
Neither listing is automatically the better one. The ordinary results underneath are the work an SEO agency does, and one buyer put the trade-off more bluntly than we would:
I turned off my Google Ads and my web traffic doubled. I never turned them back on again after that. A lot of people, me included, skim "sponsored" hits because they're usually not worth clicking on.
Company director, r/smallbusinessuk
That is one account and it is not a rule. It is a useful correction to the assumption that appearing above the organic results is the same as being first, which is the thing the label was invented to prevent.
What Google Ads does at UK scale
The reason any of this matters in the United Kingdom specifically is scale. The Competition and Markets Authority designated Google with strategic market status in October 2025, having found that more than 90% of searches in the UK take place on its platform.
Ofcom's Online Nation report puts the same thing from the other side: Google Search is used by four in five, 82%, of UK adults, and takes around 3 billion searches a month.
It is also where the money already goes. Search took 44% of UK digital ad spend in 2025, growing 6% year on year to £17.9bn, according to IAB UK's Digital Adspend study.
Which is the argument for taking it seriously and the argument for not relying on it. Buying visibility on one platform is not diversification, however large the platform is.
Google Ads for beginners: what you can run yourself
A single campaign, in one town, on a handful of obvious searches, with a modest daily budget, is genuinely something a careful owner can set up and keep an eye on. Plenty of accounts like that run for years without anybody managing them.
What decides it is not the size of the business. It is how many keywords, how many areas and how many products the account has to hold apart, and how much a wasted click costs you.
The controls on your side are the budget, the keywords, the negative keywords, the wording of the adverts, the locations and the hours. Everything on Google's side happens per search and cannot be bought in advance.
Two things are worth doing whoever runs it. Keep the account in your own name, and read what a month of it actually costs before agreeing a fee, since the fee and the spend are separate payments.
If you are not sure which side of that line you sit on, ask somebody who is willing to say you do not need it. That answer is available and it is free.
What Google Ads does badly when nobody is watching
An unmanaged account rarely fails loudly. It spends the budget every day and returns something, which is exactly why nobody opens it for four months.
| What happens | What it looks like from outside | What it needs |
|---|---|---|
| Broad matching drifts | Traffic looks healthy and the enquiries do not follow | Reading the search terms report and adding negatives |
| One keyword eats the budget | The daily spend is fine and everything else stopped showing | Splitting the ad group, or capping the term |
| The advert points at the wrong page | Clicks arrive and leave immediately | A landing page that answers the search |
| Nothing is counted | Nobody can say which clicks became customers | Conversion tracking set up before the spend starts |
| It never left the testing phase | Costs are high and steady for months | Enough data on one setup to judge it, rather than constant changes |
What Google Ads can be held to
An account that never leaves the testing phase is the honest reason management exists. An account has to gather evidence before it can be tuned, and paying somebody to sit through that phase is different from paying somebody to promise its outcome.
Oh, my sweet summer child. Have you ever dealt with these marketing businesses that promise qualified leads?
Business owner, r/smallbusinessuk
Google Ads can be held to clicks, to costs and to whatever you have set up as a conversion. It cannot be held to the quality of a lead, because nothing in the platform knows what happened after the phone rang.
So the thing to ask a supplier is not what results they get. It is what they will show you each month, and what would count as it not working. That is the whole test, and it is the one we would want applied to us.
Google Ads is one route to being found, and it is the fastest one. It sits alongside the rest of what digital marketing covers, most of which is slower and none of which stops the day you stop paying.