What is Google Ads? The complete guide for beginners

If you’re new to online advertising, you’re probably wondering: what exactly is Google Ads? In simple terms, what is Google Ads? It’s Google’s advertising network, a platform developed by Google that enables companies to display their ads to Internet users when they perform a search. Launched in 2000 as Google AdWords, the platform changed its name in July 2018 to Google Ads, reflecting its evolution into an advertising ecosystem much broader than just the search engine.

Unlike advertising on social networks, which is based on centers of interest, Google Ads targets intent. To understand Google Ads is to understand this fundamental difference: the user is looking for a solution, a product or a service; you appear at the precise moment they express this need. This ability to capture users at the right moment makes Google Ads a particularly powerful lever for acquisition, lead generation or new product launch. Thanks to Google Ads, your company can appear immediately on the search network or on display, and rapidly gain visibility on the Internet, while attracting new qualified customers.

When you use Google Ads, your ads can appear at the top of search results, on YouTube (via video campaigns), on millions of partner sites belonging to the Google network, or even in Gmail and Google Maps. The objective is clear: capture attention, generate qualified clicks and convert these visits into leads thanks to an optimized landing page. Each click you pay for has a cost – the cost per click – which varies according to the competition on your keywords and the quality of your ads.

What is Google Ads and how does advertising on the Google network work?

Now that you know what Google Ads is in general, let’s take a closer look at how this platform works. What exactly is Google Ads? It’s a Google platform that enables advertisers to create and display their own ads in a variety of formats: text ads, visual ads, video ads or even shopping ads for e-commerce. The company selects keywords related to its activity to appear on corresponding searches. When the user launches a query on Google, the ad network analyzes all the available ads in just a few milliseconds and selects those to be displayed.

This choice depends on a bidding system, but also on the quality of the ad and the relevance of the landing page. Google doesn’t necessarily select the highest-paying advertiser, but the one whose response“shows relevance” to the user’s search query. This approach guarantees a better user experience and rewards advertisers who create quality ads that are consistent with search intent. The click-through rate (CTR) is also a key indicator: an ad that generates many clicks in relation to its number of impressions signals to Google that it is relevant, which can reduce your cost per click.

The auction system explained simply

Contrary to popular belief, Google Ads doesn’t just work on the principle of “he who pays the most wins”. The system combines three elements:

1. Your maximum bid: the amount you are willing to pay for a click
2. Quality level: a score out of 10 that evaluates the relevance of your ad, keywords and landing page.
3. The expected impact of ad extensions: additional information (telephone, address, links) that enriches your presentation

These three elements are multiplied to calculate your “Ad Rank”. This is why a company with a modest budget but excellent ad quality can outperform a competitor who spends more but offers a mediocre experience.

Understanding the Google Ads platform and its Display / Search network

Google Ads allows you to appear on two main types of sites, each serving different marketing objectives:

The research network

The search network corresponds to the ads displayed in Google results when a user types in a query. These ads appear with the words “Sponsored” and are generally positioned at the top of the page, before the organic results. The search network remains ideal for rapid conversion, as the user expresses active intent – actively seeking a solution, product or service.

A well-written Google ad, with a clear message and a relevant link to a consistent landing page, can lead to a very high conversion rate. The key is to align the ad perfectly with the query and offer on the landing page exactly what the user is looking for. This consistency not only improves your conversion rate, but also your return on investment (ROI).

The Display Network

The Display network corresponds to visual advertising displayed on other websites, mobile applications or YouTube. With over 2 million partner sites, the Display network reaches over 90% of Internet users worldwide. This network reinforces brand image: web users see you several times, in several forms, generating recognition and trust before the act of buying.

Display works particularly well for remarketing (retargeting visitors to your site) or building awareness among a broad audience. You can target according to interests, user behavior, demographics, or even specific websites.

Google Shopping and YouTube

Google Shopping displays your products with photo, price and store name directly in the search results. This has become a must for e-commerce, as users can visually compare offers before they even click.

YouTube, the world’s second-largest search engine, lets you display video ads before, during or after content. Formats vary: short non-skippable videos (6 seconds), skippable videos, YouTube display banners, etc. Video excels at telling a story, demonstrating a product or creating an emotional bond with your audience.

The advantages of Google Ads: visibility on Google, fast acquisition and results

Google Ads is one of the few marketing levers capable of delivering immediate, measurable results. As soon as your campaigns go live, you can appear on the first page and capture traffic from your own catchment area, or from new geographical sectors depending on the location you’re targeting. Want to get started? Our article explains how to create an effective Google Ads campaign in just 10 steps!

Why does Google Ads work?

Speed: Unlike SEO (natural search engine optimization), which takes several months to position a site, paid campaigns enable you to achieve visibility on the Internet from day one. A blog post can take 6 months to rank; a Google Ads ad can generate traffic within an hour of validation.

Budget control: You set a daily or monthly budget and Google never exceeds it. If your daily budget is €30, you’ll never pay more than ~€900 over the month (Google can spend up to 2x the daily budget some days, but compensates on other days to respect the monthly ceiling).

Precise measurement: every click, every conversion, every euro spent is tracked. You know exactly how much each new customer has cost you, and can calculate your return on investment with precision.

Granular targeting: You decide who sees your ads based on geographic location, language, device used (mobile, computer, tablet), delivery times, and even user behavior (have they already visited your site? watched certain videos?).

Adaptability: If a performance campaign doesn’t meet your objectives, you can modify or stop it immediately. If a keyword costs too much, you exclude it. If a landing page isn’t converting, you change it. This flexibility is crucial to continually optimizing your results.

Set up your first campaign: objectives, budget, keywords and ad copy

The effectiveness of a campaign depends on its construction. A well-structured campaign helps you achieve your objectives, whether in terms of acquisition, lead generation or sales. Before creating any ad, ask yourself these fundamental questions:

• What is my main objective (sales, leads, traffic, brand awareness)?
• Who is my ideal customer and what exactly do they search for on Google?
• What action do I want the visitor to perform on my landing page?
• What budget can I allocate and what cost per acquisition can I afford?

Budget and cost management for Google Ads campaigns

Google Ads works on a cost-per-click auction model. You only pay when someone clicks on your ad, not for impressions (except for Display CPM campaigns).

You define a daily budget (e.g. €20/day), and Google distributes it throughout the day according to search volume. The budget can be adjusted at any time according to periods of high demand (sales, holidays), the growth of your business or the appearance of a new product on the market. You decide how much you spend, and how quickly you want to obtain actionable data.

How much does a click cost? The average cost per click varies enormously depending on :

• Sector of activity: legal or financial keywords can cost €20-50 per click, while less competitive keywords can cost €0.50.
• Competition: the more advertisers there are for a given keyword, the higher the price.
• The quality of your ad: a good level of quality can reduce your cost per click by 30 to 50%.
• Geographical location: larger cities are generally more expensive

Google Ads allows you to manage your budget in a controlled and progressive way. Start with a test budget, analyze the results over 2-3 weeks, then gradually increase the budget based on what works.

Want to know more about campaign pricing? Read our article Google Ads Prices – How to optimize your advertising budget?

Choose your keywords and define your catchment area

Keywords determine which searches you appear on. They must be directly related to your product or service, but also correspond to the search intent. For example, “buy men’s running shoes Paris” indicates a strong buying intent, while “how to choose running shoes” indicates an information-seeking phase.

Match types allow you to control the precision of your keywords:

• Broad query: your ad can appear for variants, synonyms and related searches
• Exact phrase: your ad appears for searches that include your key phrase or similar variants
• Exact keyword: your ad appears only for this specific keyword or closely related variants

Google also lets you target a specific catchment area: around a given address (radius of 5, 10 or 20 km), in a town, department, region or country. You can also exclude certain areas if you don’t serve them. This location function is essential when working in local or geolocated sectors (catering, home services, physical stores).

The targeting language is also configurable: you can choose to show your ads only to users whose browsing language is French, English, etc.

Writing Google ads and optimizing landing pages

An ad is worthless without a clear message and a strong value proposition. Ad copy should cover the same subject as the user’s query, and lead them to a coherent landing page.

Minimum structure of a text ad :

• 3 titles (30 characters each): include your main keyword in the first title
• 2 descriptions (90 characters each): explain your offer and add a clear call toaction
• Extensions: add additional links, telephone numbers, customer reviews, promotions…

Good writing practices :

• Include the main keyword in the title to show relevance
• Highlight a concrete benefit, not just a feature
• Add a call to action (“Request a quote”, “Buy now”, “Free trial”)
• Use figures and concrete data (“24h delivery”, “4.8/5 rating”)
• Stand out from the competition (price, quality, guarantee, expertise)

Landing page optimization :

A well-constructed landing page improves conversion and boosts the position of your ads, as Google assigns a level of quality based on relevance and user experience. Your page should :

• Match the ad: if the ad talks about “men’s running shoes”, the page must show men’s running shoes, not a general home page.
• Load quickly: ideally less than 3 seconds (Google penalizes slow pages)
• Be mobile-friendly: over 60% of searches are done on mobile devices
• Have a single clear objective: don’t disperse attention with 10 possible actions
• Inspire trust: testimonials, reviews, certifications, guarantees, legal notices
• Facilitate conversion: short form, visible button, simple process

H2 Structure, manage and optimize your campaigns

Google Ads offers a range of campaign types to suit different marketing objectives and audiences. Understanding the specifics of each format enables you to build a coherent strategy.

Campaign types: Search, Display, YouTube video

Campaigns Research network

To be visible on strategic queries related to your business. Ideal for capturing existing demand and generating fast conversions. You target users who are actively looking for what you have to offer.

Display campaigns

Reinforce your brand image with visuals displayed on Google’s network of partner sites. Perfect for remarketing (retargeting your visitors) or creating awareness among a new audience. Display generally generates a lower click-through rate than Search, but allows you to reach a much larger volume of users.

Video campaigns on YouTube

To tell your story and anchor your brand in users’ minds. Video allows you to demonstrate your product, explain complex concepts and create an emotional connection. Several formats are available: bumper ads (6 seconds), skippable ads (longer, can be played after 5 seconds), non-skippable ads.

Shopping campaigns

Specific to e-commerce. Your products appear with image, price and store name directly in the search results. Conversion rate generally higher than text search, as users already see the product and price before clicking.

Performance Max campaigns

Automated performance campaign type launched by Google in 2021 and gradually imposed. Performance Max delivers your ads automatically across all Google channels (Search, Display, YouTube, Gmail, Maps, Discover) using artificial intelligence to optimize performance. You supply your assets (text, images, videos), define your objectives, and the algorithm tests and distributes to the best-performing locations. Controversial because it offers less granular control, but effective when properly parameterized with audience signals and clean conversion data.

Bid management, performance and conversion tracking

Google Ads offers several bidding strategies, both automatic and manual. The choice depends on your maturity, data volume and objectives.

Main auction strategies :

• Manual CPC: you set the maximum cost per click for each keyword. Total control, but time-consuming and less efficient than large-scale automation.
• Optimized CPC: semi-automatic bidding. You set a base CPC, and Google automatically adjusts it to maximize conversions.
• Maximize clicks: Google automatically allocates your budget to obtain the maximum number of clicks. Useful for generating traffic quickly, but does not guarantee quality visits.
• Target CPA (cost per acquisition): you specify how much you’re willing to pay per conversion, and Google optimizes bids to meet this target. Requires a sufficient conversion history (at least 30 conversions over 30 days recommended).
• Target ROAS (target return on advertising investment): you define the desired return on investment (for example, for every €1 spent, I want to generate €4 in sales). Ideal for e-commerce, where conversion values are known.
• Maximize conversions: Google spends your budget optimizing for maximum conversions, whatever the cost.

Conversion tracking is ESSENTIAL

Without properly configured conversion tracking, you’re flying blind, and Google’s algorithm can’t optimize. A conversion is a valuable action for your business: a purchase, a completed form, a phone call, a download.

To configure conversion tracking :

1. Install the Google Ads tag (ideally via Google Tag Manager)
2. Define your conversion actions (purchase, lead, call, etc.)
3. Assign a monetary value to each conversion if possible
4. Test that everything is working properly before launching campaigns

Since March 2024, Google has required the use of Consent Mode v2 for ad targeting in Europe, in order to comply with the RGPD. This configuration transmits users’ consent to Google while allowing performance to continue to be measured in aggregate.

Interpreting data, avoiding errors and protecting your account

The strength of Google Ads lies in the wealth of data available. By analyzing the metrics, you can identify ineffective keywords, overly generic ads and areas for improvement.

Key metrics to monitor :

• Impressions: how many times your ad has been displayed
• Clicks: how many people have clicked
• Click-through rate (CTR): clicks ÷ impressions. Indicates the relevance of your ad
• Cost-per-click (CPC): how much you pay on average per click
• Conversions: how many valuable actions have been completed
• Conversion rate: conversions ÷ clicks. Indicates the effectiveness of your landing page
• Cost per conversion (CPA): how much each new customer/lead costs you
• Return on investment (ROAS): sales generated ÷ advertising cost

Common mistakes to avoid:

• Overly broad keywords: targeting “shoes” when you only sell running shoes leads to unqualified traffic and wasted budget.
• No exclusion of negative keywords: if you don’t sell free shoes, exclude the negative keyword “free”.
• Irrelevant landing page: send all clicks to home page instead of specific product pages
• Neglecting mobile: more than 60% of searches are mobile, so your page must be perfectly optimized.
• No A/B testing: always test several versions of ads to see which performs best
• Lack of follow-up: letting a campaign run without weekly analysis and optimization
• Disorganized account structure: mixing all products/services in a single campaign makes optimization impossible

Protect your account :

• Enable two-factor authentication
• Watch for unusual spending spikes (possible click fraud)
• Exclude poor-performing Display sites
• Regularly check the search terms that trigger your ads
• Be on the lookout for phishing attempts (fake emails claiming to come from Google)

Google Ads, a powerful lever if mastered

Now you know what Google Ads is and how it works. Google Ads represents a huge opportunity for businesses of all sizes to acquire new customers quickly and measurably. However, the platform has become increasingly complex with the advent of artificial intelligence, Performance Max campaigns and multiple delivery formats.

Success on Google Ads in 2025-2026 requires :

• A clear strategy with measurable objectives
• Landing pages optimized for conversion
• Impeccable conversion tracking
• Regular analysis and ongoing optimization
• A detailed understanding of user behavior and search intent

If you’re just starting out, start small, test, learn, then gradually increase your investment in what works. If the complexity seems insurmountable, the support of a certified Google Ads expert can considerably speed up your results and avoid costly beginner’s mistakes.

The most important thing to remember is that Google Ads is not an expense, but an investment: every euro must generate a positive, measurable return on investment.

Afraid of going it alone on Google Ads? Why not make an appointment with one of our experts!