Google Ads: how to advertise on Google and win customers

What is Google Ads and how does it work?

Google Ads is Google's advertising platform that lets businesses promote products and services on the search engine and in other spaces of its digital ecosystem.

Unlike many marketing strategies that take time to generate visibility, Google Ads lets you start showing ads once a campaign meets the publishing requirements and enters the relevant auctions.

For example, if you run a digital marketing agency, you can create a campaign to appear when someone searches for "digital marketing agency in Cancún" or "Google Ads services for businesses."

The goal isn't just to get visits, but to attract users with relevant intent and lead them to take a commercial action.

What can you achieve with Google Ads?

• Generate quote requests and contact form submissions.
• Receive phone calls and WhatsApp conversations.
• Increase online store sales.
• Capture potential customers for B2B services.
• Promote a local business in specific geographic areas.
• Increase bookings for hotels, restaurants and tourism businesses.

To achieve this, you need to define an objective, select the right campaign, set a budget and measure conversions.

How does the Google Ads auction work?

Every time a search can trigger ads, Google runs an auction to determine which are eligible to appear and in what position.

The advertiser who offers the most money per click doesn't necessarily win. The system calculates Ad Rank by considering different factors, including:

• Bid: the bidding strategy and the amount you're willing to pay according to your campaign settings.
• Ad and landing page quality: the relevance, usefulness and experience you offer the user.
• Competition: other advertisers taking part in the same auction.
• Search context: location, device, search terms and other available signals.
• Ad assets: the expected impact of links, calls and other additional elements.

These factors influence the ad's eligibility and position. That's why a well-structured campaign can compete effectively without always having to make the highest bid.

You can check the official criteria in Google Ads' Ad Rank guide.

Practical example

Imagine two companies want to appear when a user searches for "digital advertising agency."

The first makes a higher bid but sends the user to a generic page with little information. The second uses a specific ad, presents its services clearly and leads to a page with case studies and a contact form.

The second company can compete for a better position thanks to the relevance and quality of its experience, although the outcome depends on the actual auction.

The key: optimizing a campaign doesn't just mean raising the budget. It also means improving ad relevance, page experience and the likelihood of achieving the expected result.

Google Ads campaign types and when to use them

Google Ads offers different campaign types. Choosing correctly depends on the business model, user intent, available resources and the commercial goal.

1. Search campaigns

They show text ads when users' searches match your targeting criteria.

They are especially useful for capturing existing demand: people who are already looking for a service or product.

Example: a Cancún company can advertise for searches such as "SEO agency in Cancún" or "air conditioning installation service."

Recommended goals: forms, calls, quote requests and sales.

2. Shopping campaigns

They let you show products with visual information, price and store name on compatible Google surfaces.

They are especially relevant for ecommerce businesses with a product catalog.

To use them, you normally need to set up Google Merchant Center, submit a valid catalog and comply with the applicable policies.

Example: a shoe store can show its products to users searching for specific models and compare its offer with other stores.

3. Performance Max

Performance Max uses automation to distribute ads across available Google surfaces, based on the campaign's goal and settings.

It can use text assets, images, videos, catalog information and audience signals to find conversion opportunities.

It's an alternative for advertisers who need to expand their reach, but it requires careful setup of goals, assets and measurement.

Recommendation: verify conversions before launching the campaign. If the system receives incorrect signals, it may optimize toward actions that don't represent commercial value.

4. YouTube and Demand Gen campaigns

These campaigns let you reach audiences through visual formats and discovery experiences.

They can help raise brand awareness, generate interest in a product or capture demand that isn't yet expressed through direct searches.

They are useful when audiovisual content is important to explain a value proposition or stand out from the competition.

5. Display campaigns

They use visual ads in compatible placements across the Google Display Network.

They can be used to extend reach, give a brand visibility or reconnect with certain audiences when the configuration and privacy requirements allow it.

Which Google Ads campaign should you choose?

This table is an initial guide, not a universal rule. The final decision should be based on customer behavior, available measurement and the economics of the business.

How much does it cost to advertise on Google?

There is no single rate for advertising on Google Ads. The cost depends on competition, industry, keywords, location, bidding strategy and the quality of the traffic you want to attract.

Many Search campaigns use the cost-per-click (CPC) model, although Google Ads also offers automated strategies that can optimize toward conversions, conversion value or other goals.

To get started, you should set a budget that yields enough data to evaluate the campaign without compromising the operation of the business.

How to calculate a starting budget

Instead of picking an amount at random, you can calculate it from your business goals.

Suppose you have this hypothetical data:

In this scenario, $12,000 MXN divided by a CPC of $20 buys roughly 600 clicks. If 5% of those visits convert, you'd get 30 conversions at a cost of $400 MXN each.

These are illustrative figures, not an estimate of your industry's real costs. Also, a conversion may be a lead and not necessarily a sale.

How do you know how much you can pay to win a customer?

You must consider contribution margin, sales close rate and the value each customer generates.

For example, if you need ten leads to close a sale and you can spend up to $2,000 MXN on advertising per new customer, the target cost per lead would be about $200 MXN, assuming all leads are of similar quality.

This relationship lets you set more realistic acquisition goals and evaluate whether advertising is profitable.

Important: the Google Ads budget is separate from agency fees, creative production costs and other marketing expenses.

Google Ads vs. SEO: which strategy to choose?

Google Ads and organic ranking have related goals, but work differently.

Google Ads lets you buy advertising exposure and capture users through campaigns. When you stop investing, your ads stop participating in auctions, unless there are other traffic sources.

SEO seeks to improve your site's organic visibility through useful content, technical structure, relevance and a good user experience. Its results usually take time and are not guaranteed.

Paying for ads doesn't directly improve a page's organic position. However, campaign data can help identify searches, commercial messages and offers worth investigating for your SEO strategy.

If you want to go deeper into organic ranking, see our SEO guide to rank your website on Google.

For many businesses, combining SEO and Google Ads lets you work on both immediate demand and long-term organic growth.

How to create a profitable Google Ads campaign

A profitable campaign starts long before publishing the first ad. You need to understand who you want to reach, what problem you solve and how much you can invest to get a commercial result.

Step 1. Define the business goal

Determine which action represents value for your business.

It could be a purchase, a qualified call, a quote request or a sales opportunity.

Avoid using visits or impressions as the only goal if what you need is sales.

Step 2. Research keywords

Identify how your potential customers search and classify queries by intent.

For example, for a digital marketing agency:

• Commercial intent: Google Ads agency, hire an SEO agency.
• Local intent: digital marketing agency in Cancún.
• Informational intent: how Google Ads works, what is SEO.

Informational searches may suit organic content, while commercial searches usually deserve priority evaluation in lead-generation campaigns.

The selection should be validated with search data, competition and expected profitability.

Step 3. Organize campaigns and ad groups

Create a structure that lets you match each search intent with a suitable message and page.

For example, a marketing services campaign can be split into thematic groups for Google advertising, SEO and digital analytics, as long as volume and goals justify that separation.

Avoid creating too many campaigns without enough budget or data to evaluate them.

Step 4. Write relevant ads

Responsive search ads let you combine different headlines and descriptions to find the combinations that best respond to each context.

Include:

• The service the user is looking for.
• A concrete, verifiable benefit.
• A differentiated value proposition.
• A call to action.
• Relevant additional assets, such as links to services or contact details.

Don't promise guaranteed results or make claims you can't back up.

Step 5. Optimize the landing page

The page the user arrives at should answer the search and make the next step easy.

A good landing page includes a clear value proposition, useful information, trust signals, a suitable mobile experience and a visible call to action.

If you advertise a Google Ads service, sending the user to a specific service page is usually more coherent than sending them to the home page without additional guidance.

Step 6. Set the budget and bidding strategy

Select a bidding strategy consistent with the goal and the available data.

Among the options you can evaluate are maximize clicks, maximize conversions and maximize conversion value, as well as their variants with CPA or ROAS targets when appropriate.

There is no universally superior strategy. The decision depends on whether you're after traffic, leads, sales or profitability, and on the quality of the conversion signals.

Step 7. Measure, analyze and optimize

Regularly review search terms, costs, lead quality, conversion rates and actual sales.

Use this data to adjust keywords, ads, landing pages and investment.

Don't change every element at once without a clear reason: you need to be able to identify which changes are producing improvements or declines.

Keywords: match types and negative keywords

Match types determine which searches can trigger your ads based on the keywords you set up.

Google Ads has three main match types for Search keywords.

Broad match

Lets you reach searches related to the meaning of the keyword and its context. It can widen reach, but requires supervision and a suitable bidding strategy.

Phrase match

Lets you show ads on searches that include the meaning of the keyword within a compatible context. It doesn't necessarily require the words to appear in the same exact order.

Exact match

Offers more specific control over searches related to the meaning of the keyword. It doesn't mean the ad can only trigger when the query is identical character for character.

See the details in the official documentation on keyword match types.

Why are negative keywords important?

Negative keywords help prevent your ads from appearing on searches that aren't relevant to your offer.

For example, if you offer professional marketing services, you might evaluate terms such as "job," "vacancies" or "free course" as negatives, as long as those topics aren't part of your commercial strategy.

Review the search terms report to discover queries that consume budget without adding value.

Don't add negatives automatically by intuition: first verify they are really irrelevant to your business.

How to measure conversions with GA4 and Google Tag Manager

A campaign without reliable measurement can produce seemingly positive reports while losing money.

For example, if Google Ads records a WhatsApp click as a conversion but doesn't distinguish between a real contact and an accidental interaction, it can misread commercial performance.

That's why measurement must connect advertising activity with the results that matter to the business.

Recommended setup

1. Google Ads: define the conversion actions that represent commercial value, such as purchases, submitted forms or qualified calls.

2. Google Analytics 4 (GA4): configure relevant events to analyze user behavior and the actions taken on the site.

3. Google Tag Manager (GTM): implement and manage the relevant measurement tags and events.

4. Validation: test the events, check they are recorded correctly and avoid duplicating conversions across different implementations.

5. Import and attribution: link the platforms where appropriate and verify which actions are used to optimize campaigns.

6. Conversion values: assign real values or justified estimates when the business model allows, to evaluate the value generated and not just the number of actions.

You can also evaluate enhanced conversions, provided you meet the applicable technical and privacy requirements.

The metrics that really matter

• CPC: how much you pay per click.
• CTR: what proportion of impressions generates clicks.
• Conversion rate: what proportion of relevant interactions ends in a conversion.
• CPA: how much it costs to get a conversion.
• ROAS: how much attributed revenue each unit of currency invested in advertising generates.
• Profitability: how much margin remains after considering the relevant costs.

For example, a ROAS of 4x means $4 of revenue is attributed for every $1 invested in ads. It doesn't mean the company earned $4 in profit: product costs, operations and other expenses still have to be deducted.

To go deeper into this approach, see our guide on metrics and data-driven decisions.

Common mistakes that waste your Google Ads budget

Even a well-configured campaign can lose efficiency if it isn't monitored.

These are some frequent mistakes:

• Sending all traffic to the home page: the user may not find the product or service they were looking for.
• Not reviewing search terms: increases the risk of paying for irrelevant queries.
• Measuring only clicks and impressions: prevents you from understanding whether the campaign generates commercial opportunities.
• Accepting automatic recommendations without evaluating them: a suggestion may not suit your goals or constraints.
• Constantly changing settings: makes it hard to assess the effect of each change and can alter performance.
• Ignoring the mobile experience: a slow or hard-to-use page can reduce conversions.
• Not connecting advertising with real sales: a large volume of leads doesn't guarantee they are good quality.
• Scaling before validating profitability: raising investment without knowing acquisition cost can multiply losses.

Optimization means making decisions from reliable data, not changing the campaign over every daily fluctuation.

Checklist before launching your first Google Ads campaign

Use this list to review the essentials before investing.

• Define the business goal and the main conversion.
• Set the budget and the maximum acceptable acquisition cost.
• Research keywords and their search intent.
• Configure the right geographic targeting and language.
• Prepare relevant ads and additional assets.
• Create a landing page consistent with the search.
• Set up and test conversions in Google Ads, GA4 and GTM as applicable.
• Review the initial negative keywords.
• Check the mobile experience and that forms work.
• Define how results will be evaluated and when optimization decisions will be made.

Before raising the budget, confirm that measurement works and that conversions represent relevant results for your business.

Frequently asked questions about Google Ads