What is PPC (pay-per-click) and how it works for a business

PPC (pay-per-click, also called cost-per-click) is the online advertising model where you pay only when someone clicks your ad, not for the impression itself. The position you appear in, first result or fifth, is not bought directly with money. It is decided by an automated auction where both your bid and how relevant and good your ad is matter. That means a bigger budget does not guarantee the top spot, and a competitor with a better ad can outrank you while paying less.

This article explains, in business-owner language, what PPC is, how the auction works and how the price is formed, which platforms it runs on, what it costs, how it differs from SEO and when it actually makes sense to start. At the end there is a comparison table and a concrete first step.

What PPC is and how the auction works

PPC is a simple deal between you and the advertising platform. You say how much you are willing to pay for a click and on which keywords or audience you want to appear. The platform shows your ad but only charges you when someone actually clicks it. If a thousand people see your ad and none click, you pay nothing. You pay for attention that turns into a site visit, not for the impression.

The part that surprises most owners is that the position is not bought. Every time someone searches on Google or opens Instagram, an instant auction fires between everyone who wants to appear there. The auction takes a fraction of a second, and the biggest budget does not automatically win it. Google and the other platforms combine your bid with a quality score for the ad to decide who appears and in what spot.

The logic is simple from the platform's side. If it only showed expensive but irrelevant ads, people would not click and the platform would earn nothing. So it rewards the ads users actually click. A good ad, relevant to what the person searched, can put you in the top spot while paying less than a competitor with a weak ad who bids more.

How the price is set, CPC, bid and quality score

Three numbers decide what you actually pay. The first is the bid, the maximum you set for a click. The second is CPC (cost per click), what you effectively pay, almost always less than your maximum bid. The third is the quality score, the grade Google gives your ad and the page it leads to, from 1 to 10.

The quality score is built from three things: how likely people are to click your ad, how well the ad matches what they searched, and how relevant and fast the page they land on is. The higher the score, the less you pay for the same position. In practice, quality lowers your bill.

An example with round numbers. Two competitors want the same spot. The first bids 5 for a click but has a low quality score, a generic ad and a slow page. The second bids 3 but has a high score, a fitting ad and a fast page. The second can appear above the first and pay, say, 2.5 per click instead of 3. Less money but a better job done wins.

Beyond CPC you will meet two more terms. CPM (cost per thousand impressions) is the model where you pay for visibility, not clicks, used mainly for awareness. CTR (click-through rate) is the percentage of people who see the ad and click it, an important signal for the quality score. And in the end what matters is CPA (cost per acquisition), what an actual customer costs you, not a single click.

Where PPC runs, Google, Meta, LinkedIn, YouTube

PPC does not mean only Google, even if that is where it started. The model of paying per click or per result exists on almost every major platform, each suited to a different type of demand and a different moment in the customer's decision.

Platform	How it works	What it suits
Google Search	Text ads on searches. You pay per click.	Existing demand, high intent. The person is already searching.
Google Shopping	Ads with photo, price and product. You pay per click.	Online stores with physical products.
Meta (Facebook, Instagram)	Ads in feed and stories. You pay per impression or result.	Created demand, discovery, eCommerce, leads.
LinkedIn	Ads to professionals, by role and company.	B2B, decision-makers, large deals and long cycles.
YouTube	Video ads. You pay when the person watches or clicks.	Awareness, consideration, brand stories.

The key difference is between existing demand and created demand. On Google Search the person is already searching for what you sell, you just make sure they find you, so intent is high and conversion comes easier. On Meta or YouTube the person was not looking for you, you catch their attention while they do something else, so you persuade harder but reach people who did not yet know you. The two complement each other, they do not exclude each other.

What PPC costs

There is no fixed price, cost per click varies widely by platform, industry and competition. The figures below are market ranges observed on accounts in Romania in 2026, useful as a starting point, not a guarantee.

On Google Search a click typically costs between 1.5 and 8 RON, depending on how competitive the industry is. On Meta, between 0.5 and 3 RON per click. On LinkedIn the click is far more expensive, 15-40 RON, because the audience of B2B decision-makers is rare and valuable. Industries with high margins and aggressive competition, finance, insurance, real estate, legal, sit at the top of every range.

The monthly budget is separate from the price of the click. An online store with a budget of 3,000 RON per month on Google Search at an average 4 RON per click buys around 750 visits. How many of those visitors become customers depends on the site, the offer and the price, not the platform. That is why a budget is not judged on its own, but by how many profitable customers it produces.

It is worth putting the scale of the channel in context. Google estimates, in its economic impact study, that businesses earn on average 8 in sales for every 1 spent on Google Ads (Google Economic Impact, methodology published by Google). It is an average across all industries, not a promise for your account, but it shows why the model has held up for over twenty years.

PPC vs SEO, when to choose each

PPC and SEO (optimising for the free, organic Google results) answer the same question, how do people reach my site, but by completely different routes. PPC buys immediate visibility, you pay and appear today. SEO earns visibility over time, you work for months on content and authority, but then traffic comes without paying per click.

Criterion	PPC (paid ads)	SEO (organic results)
Cost	You pay per click, continuously. Stop, and you vanish.	Investment in content and time, no cost per click.
Speed of results	Immediate, you appear from day one.	Slow, 3-6 months or more.
Control	High, you choose message, budget, audience, when to start and stop.	Low, you depend on the algorithm and competition.
Durability	Stops when you stop the budget.	Durable, traffic stays if you hold the rankings.
When to choose	You want fast results, you test an offer, you have a short season.	You build long-term, you want an ever-lower cost per customer.

In practice it is not a choice between them, but a question of order. PPC brings your first customers fast and shows you, within weeks, which keywords and messages actually sell. That data tells you exactly what to build SEO on, so you do not waste months on content that brings no sales. You start with PPC for speed, you build SEO for durability.

When PPC is worth it for your business

PPC is not right for everyone, at any time. It clearly pays off when demand already exists for what you sell, people actively search for your product or service on Google, and you want to be there when they do. It also pays when you need fast results, you launch a product, you have a short season, you want to test an offer without waiting months.

Three conditions must hold so you do not burn money. First, the margin must support the acquisition cost, if a customer leaves you 50 in profit and costs 80 to acquire, you lose on every sale. Second, the site or page must convert, paying for the click is pointless if the page is slow, unclear or does not inspire trust. Third, you must be able to measure what happens after the click, otherwise you optimise blind.

There are also cases where it does not pay, at least not yet. If the product is so new that nobody searches for it, paying on searches has nothing to catch and you first need channels that create demand. If the margin is too thin or the landing page is not ready, better fix those first. PPC amplifies what you already have, it does not repair an offer that does not sell.

Where you start

The first step is not to open an account and pour in budget. It is to answer three questions, what a customer is worth to you, how much you can afford to pay to acquire one, and on which platform your demand sits. If people actively search for you, start with Google Search. If you sell through visual discovery, start with Meta. If you sell B2B to decision-makers, look at LinkedIn despite the expensive click.

Then you start small and controlled, a modest budget you can afford to lose while you learn what works, with measurement set up correctly from the start so you see not just clicks but customers. After the first few weeks you have real data on cost per customer and can decide whether to scale or adjust.

If you want the full picture of how paid advertising ties to profit, read the complete performance marketing guide. And if you want to know how to lower the bill through ad quality, see what the Google Ads quality score is. PPC is one of the most measurable channels there is, every unit spent leaves a trace, and that makes it the easiest to control if you start with the numbers of your business in front of you.