How Does Google Ads Work? The Auction, Quality Score and Your First Campaign

How does Google Ads work? Every time someone searches on Google, a tiny auction runs in the background. Advertisers who chose keywords matching that search are entered. Google ranks them using two things: how much each is willing to pay for a click, and how good and relevant their ad and landing page are. The winners get shown, and they usually pay only when someone clicks.

That is the whole machine in one paragraph. The bid gets you into the room. Quality decides where you sit. And you rarely pay your full bid, because the price is set by the advertiser just below you, not by your own ambition.

Everything else, the campaign types, the bidding strategies, the dashboards with forty columns, is detail built on top of that idea. Below is that detail in plain English, plus a first campaign you can set up without setting fire to your budget.

What are Google Ads, exactly?

Google Ads is Google’s advertising platform. You pay to show ads on search results, YouTube, Gmail, Maps, the Play Store, and partner websites and apps.

What makes Google different is intent. On Instagram, you interrupt someone watching a friend’s wedding reel. On Google Search, the person just typed “physiotherapist near me” or “best CRM for small business”. They told you what they want. Your job is to be the best answer.

That is why search clicks convert well, and why they can be expensive. Every competitor wants that same moment.

How does Google Ads work? The auction, step by step

If you only learn one thing about how Google advertising works, make it the auction. Understanding it saves you more money than any hack.

1. Someone searches. Say “interior designer in Pune”.
2. Google finds eligible ads. Every advertiser whose keywords match that search, whose targeting includes Pune, and whose budget is not exhausted for the day gets entered.
3. Google calculates Ad Rank for each ad. Ad Rank combines your bid, the quality of your ad and landing page, the expected impact of your assets (sitelinks, callouts, phone numbers and so on), and the context of the search, like device, location and time.
4. Ads below a minimum threshold are dropped. If your ad is poor quality, a high bid alone may not even get you shown.
5. The highest Ad Ranks win the top positions.
6. You pay when clicked. The actual cost per click is typically the minimum needed to hold your position against the advertiser below you, not your maximum bid.

The important consequence: a better ad can beat a bigger wallet. If your ad and landing page are clearly more relevant, you can rank above a competitor who bids more, and pay less per click while doing it.

Quality Score, the number that quietly sets your prices

Quality Score is a 1 to 10 rating Google shows for each keyword. It is a diagnostic rather than the exact auction input, but it tells you how Google sees you. It has three parts, each rated below average, average or above average.

• Expected click through rate. How likely people are to click your ad when it shows for this keyword, compared with other advertisers.
• Ad relevance. How closely your ad matches the intent behind the search.
• Landing page experience. Whether the page people land on is relevant, useful, fast and easy to use, especially on mobile.

How to read it:

Quality Score	What it usually means	What to do
1 to 4	Mismatch between keyword, ad and page	Split the keyword into its own ad group, rewrite the ad, fix the landing page
5 to 6	Acceptable but leaving money on the table	Tighten ad copy to the search, improve page speed and clarity
7 to 10	Strong relevance	Protect it, test new ads carefully, scale budget

The fastest way to improve Quality Score is boring: make the keyword, the ad and the page say the same thing. If someone searches “eyelash extensions in Bandra”, the ad should say eyelash extensions in Bandra, and the page should be about eyelash extensions in Bandra, with prices and a booking button. Not your homepage. Never your homepage. More on that in landing page design is an argument.

Keywords and match types

Keywords tell Google which searches you want to show up for. Match types tell Google how loosely to interpret them.

• Broad match. Your ad can show for searches related to your keyword, even without the exact words. “Running shoes” might show for “jogging sneakers for flat feet”. Paired with good tracking and smart bidding it finds volume. Without those, it wanders.
• Phrase match. Written with quotes, like “running shoes”. Your ad shows for searches that include the meaning of that phrase, like “best running shoes for women”.
• Exact match. Written with square brackets, like [running shoes]. Your ad shows for searches with the same meaning, including close variants. Most control, least volume.

Negative keywords are just as important. They tell Google where not to show. Selling premium furniture? Add “free”, “second hand”, “OLX”, “jobs” and “DIY” before you spend a rupee. Then check the search terms report, which shows the real searches that triggered your ads, every week and keep adding.

Google keeps adding AI powered keyword expansion to Search campaigns. Treat it like a new hire: useful, but check its work.

Google Ads campaign types

Google offers several campaign types. Choosing the right one matters more than any setting inside it.

Campaign type	Where ads show	Best for	Watch out for
Search	Google search results	Capturing people actively looking	Expensive clicks in competitive categories
Performance Max	Search, YouTube, Display, Gmail, Maps, Discover	E-commerce and lead gen with good conversion data	Less visibility and control, can lean on branded searches
Shopping	Product listings with image and price	E-commerce with a product feed	Feed quality decides everything
Demand Gen	YouTube, Discover, Gmail	Visual demand creation, like Meta style ads	Lower intent, needs strong creative
Video	YouTube	Awareness, consideration, remarketing	Views are not sales
Display	Partner sites and apps	Remarketing, cheap reach	Low quality placements if left unchecked
App	Search, Play Store, YouTube, Display	App installs and in-app actions	Optimise for actions, not just installs

Search campaigns

The classic text ads on the results page. You choose keywords, write responsive search ads (up to 15 headlines and 4 descriptions, which Google mixes and matches), and bid. For most businesses starting out, this is where we begin, because it is the closest you get to a direct line between spend and customers.

Performance Max

Performance Max, or PMax, is a single campaign that runs across almost all of Google’s inventory. You give it a goal, a budget, creative assets (headlines, images, videos, logos) and audience signals, and Google’s systems decide where and to whom to show ads.

It can be excellent for e-commerce brands with a clean product feed and solid conversion tracking. It can also be a black box that takes credit for sales you would have got anyway, especially people searching your brand name. Our rule: PMax is a strong engine, but only after the tracking is right, and only when someone is checking what it is actually doing. Use the channel and search term insights Google now provides.

Shopping, Demand Gen, Video and Display

Shopping runs off a product feed in Google Merchant Center, and feed quality beats bids: “SKU 4471 Blue” loses to “Women’s Cotton Kurta, Indigo Block Print, Size M” every time. Demand Gen, Video and Display create demand rather than capture it, so judge them on new customer reach and assisted conversions, not just last click sales.

Bidding strategies

Bidding is how you tell Google what you want and what you will pay for it.

• Manual CPC. You set bids yourself. Control, but you lose Google’s real time signals.
• Maximise Clicks. Useful briefly for data, dangerous long term because clicks are not customers.
• Maximise Conversions. Gets the most conversions for your budget. A good starting point once tracking works.
• Target CPA. Aims for an average cost per acquisition you set, like 800 rupees per lead.
• Maximise Conversion Value and Target ROAS. For e-commerce. Optimises for revenue, or a return on ad spend target you set, like 4x.

Smart bidding needs a steady stream of conversions every month. With only a handful, the algorithm is guessing with your money.

Conversion tracking: the part everyone skips

If Google does not know what a good result looks like, it cannot find more of them. Before you launch, set up conversion tracking properly.

• Install the Google tag on your website, directly or through Google Tag Manager.
• Track the actions that mean money: purchases, form submissions, booked calls, WhatsApp clicks if that is how you sell.
• For e-commerce, pass the actual order value, not a fixed number.
• Set up enhanced conversions, which use hashed first party data to improve measurement accuracy.
• If you sell through a sales team, import offline conversions from your CRM, so Google learns which leads actually became customers. In our experience this changes B2B results more than anything else.
• Mark only your true goals as primary conversions. If “page view” counts as a conversion, Google will happily buy you page views.

Indian lead gen has a specific problem: junk leads. Fake numbers, students, accidental form fills. Optimise for form fills and Google finds you more form fillers. Add a few qualifying questions and feed back which leads were real.

How to do Google Ads: your first campaign, step by step

Here is a first Search campaign for a Bengaluru dental clinic new to Google Ads.

1. Define one goal. Booked appointments, tracked as form submissions and calls from ads.
2. Set up tracking first. Google tag on the site, conversion actions for the form thank you page and for calls.
3. Build a dedicated landing page. One page per main service: dental implants, braces, root canal. Clear price ranges or starting prices, photos of the clinic, reviews, a booking form and a click to call button. Fast on a mid range Android phone on 4G.
4. Research keywords. Use Google’s Keyword Planner. Start with high intent terms: “dental implants cost in bangalore”, “root canal treatment near me”, “braces for adults koramangala”.
5. Group tightly. One ad group per service, with 5 to 15 closely related keywords each, in phrase and exact match to begin.
6. Add negatives. “free”, “government”, “course”, “jobs”, “salary”, “college”, “home remedy”.
7. Write the ads. Use the keyword in headlines, include a specific offer or proof point (“Implants from 25,000 rupees”, “4.8 rating from 600 patients” only if true), and a clear call to action.
8. Add assets. Sitelinks to each service, callouts like “Same day appointments”, a call asset with your number, a location asset linked to your Google Business Profile.
9. Set location targeting carefully. Target people in or regularly in your area., not people merely interested in it.
10. Choose bidding. Start with Maximise Conversions, or Maximise Clicks with a bid cap for the first week or two if you have zero conversion history, then switch.
11. Set the budget. More on this below.
12. Launch, then watch. Check search terms every few days for two weeks, add negatives, pause keywords that spend without converting. Avoid big daily changes.

The same shape works for a D2C brand, with Shopping or PMax alongside Search, and for B2B, with offline conversion import doing the heavy lifting.

How much does Google Ads cost in India?

There is no minimum spend. Whether a few hundred rupees a day does anything useful depends on your category.

Cost per click varies hugely. In our experience, local services in smaller cities can see clicks in the tens of rupees, while competitive categories like insurance, loans, education, real estate and B2B software can run into hundreds of rupees per click, sometimes more. Check Keyword Planner for your exact keywords.

Here is a rough way to think about monthly ad spend, excluding agency fees.

Stage	Typical monthly ad spend	What it gets you
Testing	30,000 to 75,000 rupees	Enough data to see which keywords and pages convert
Local business, steady	50,000 to 2 lakh rupees	Consistent leads in one city or a few areas
Growing D2C or B2B	2 lakh to 10 lakh rupees	Search, Shopping or PMax, and remarketing working together
Scale	10 lakh rupees and up	Multiple campaign types, regions and serious testing

A simple way to sanity check a budget: work backwards. If clicks cost about 40 rupees and your landing page converts 5 percent of visitors into leads, each lead costs about 800 rupees. If 1 in 5 leads becomes a customer, a customer costs about 4,000 rupees in ad spend. If your customer is worth 25,000 rupees, you have a business. If they are worth 3,000, fix the page, the offer or the channel.

Also note: Google can spend up to twice your average daily budget on a busy day, but over a month it will not charge more than your daily budget times the average number of days in a month. And in India, ad spend billed by Google India attracts GST, so budget for that on top of your media spend.

Common Google Ads mistakes we see

• Sending traffic to the homepage. The homepage is for everyone, which means it is for no one in particular.
• Accepting every recommendation. Many of them mean spend more and broaden everything. Read before you click apply.
• No negative keywords. You end up paying for job seekers, students and people looking for free stuff.
• Tracking the wrong conversion. Optimising for clicks, page views or every junk form fill.
• Changing everything every day. Smart bidding needs stable conditions to learn.
• Judging too fast or too slow. A week is usually too soon to call it. Three months of spending with no conversions is far too long.

Google Ads vs Meta Ads

Google captures demand, Meta creates it. If people already search for what you sell, start with Google Search. If they do not know they need it yet, or your product sells on visuals and impulse, Meta often leads. Most growing brands use both. We have a full Meta ads guide for India if you want the other half of the picture, and some thoughts on what to expect from a performance marketing agency.

FAQ

How does Google Ads work for beginners?

You choose keywords related to your business, write ads, and set a budget and bid. When someone searches for those keywords, Google runs an auction and shows the ads with the best combination of bid and quality. You usually pay only when someone clicks, and the price is often lower than your maximum bid.

What is a good Quality Score in Google Ads?

A 7 or above is generally strong, 5 or 6 is acceptable but improvable, and 4 or below signals a mismatch between the keyword, the ad and the landing page. The fix is usually tighter ad groups, ads that mirror the search, and a dedicated, fast landing page.

How much should I spend on Google Ads in India to start?

For most businesses, 30,000 to 75,000 rupees a month for the first two to three months is a sensible testing budget, depending on how expensive clicks are in your category. That is usually enough to learn which keywords and pages convert.

Is Performance Max better than Search campaigns?

Neither is better in general. Search gives you control and clear visibility into keywords, which is why we usually start there. Performance Max can scale well once tracking is accurate and data is plentiful, but someone has to check where it spends.

How long does it take for Google Ads to work?

Ads can show within hours of approval. Stable, profitable performance usually takes several weeks of data and refinement, so treat the first month as learning.

Can I run Google Ads myself or do I need an agency?

You can run a simple Search campaign yourself if you follow the basics here and check it weekly. A specialist earns their fee when spend grows, campaign types multiply, or tracking and CRM integration get complicated. Either way, insist on access to your own account.

Where to go from here

Google Ads is not magic and it is not a casino. It is an auction that rewards relevance. Pick the right searches, say exactly what the searcher wants to hear, send them to a page that delivers it, and tell Google which results matter.

If your ads are spending but not selling, they may be suffering the problems we describe in why your ads are dying a slow boring death. And if you want a second pair of eyes on your account, have a look at our advertising work or tell us what you are running. We will tell you what is wasting money and what we would change first.