How do you choose the right keywords and match settings for your Google Ads campaign?

Selecting the right keywords and match settings is not just an optimisation question – it’s a strategic decision. They determine not only which searches you pay for, but more importantly, which data the Google Ads algorithm uses to optimise your campaigns.

A poor choice almost always leads to the same pattern: budget is spent on searches without purchase or lead intent, conversion costs increase, and campaigns become increasingly unpredictable.

In this article, you will learn how to select keywords and match types based on goals, data reliability, and control rather than search volume or guesswork. You’ll gain a clear decision framework that helps determine when an exact phrase, or a broad match, is appropriate, which keywords strengthen the algorithm, and which ones contaminate it with poor signals. Instead of generic advice, you will find practical decisions you can apply directly in your Google Ads account.

Businesses running paid campaigns often combine strong keyword strategies with professional Google Ads campaign management to ensure that budgets are used efficiently and campaigns remain scalable.

When Should You Choose Certain Keywords and Match Settings? (The Decision Framework)

Choosing keywords and match settings should not start with search volume or Google’s automated recommendations. Instead, it begins with three critical conditions: campaign goals, data reliability, and the level of control you require.

If one of these elements is missing, the algorithm will optimise for the wrong signals – no matter how well structured the campaign appears.

Use this decision framework as a starting point.

Are you primarily optimising for revenue or lead quality?

If so, choose keywords with clear purchase or decision intent and match types that allow control over the search queries included in the campaign. Broad interpretation without value-based signals almost always leads to wasted budget.

Is your conversion data stable and reliable?

Only when conversions are tracked consistently and accurately should you allow broader match types. With incomplete or unreliable data, broad match typically increases noise rather than reach.

How much control is needed at this stage?

In the early stages of a campaign or during a restructuring phase, control is more important than scale. This requires tighter match types. Once performance becomes predictable, you can gradually allow broader interpretations.

This framework ensures you select match types based on campaign phase, data quality, and business goals rather than assumptions about performance.

Key Takeaways

Which Keywords Are Suitable for Optimisation?

Not every keyword is suitable for training the Google Ads algorithm. The key factor is not search volume, but the predictability of user intent.

Keywords become useful when you can clearly explain:

Suitable keywords typically have one of these characteristics:

Unsuitable keywords are often characterised by:

In practice, this means selecting fewer but more precise keywords rather than a large set that forces the algorithm to guess which traffic is valuable.

Which Match Types Should You Use?

Match types determine how Google interprets your keywords and how much decision-making power you give to the algorithm. The question is therefore not which match type is “better”, but which level of interpretation is appropriate based on your data.

Exact Match: Maximum Control

An exact match is used when maximum control is required. It is ideal for campaigns with clear purchase or enquiry intent and limited data volume.

Although an exact match is no longer strictly literal, Google still limits the variation to close intent-based queries.

This means ads appear only when searches closely match the chosen keyword.

Phrase Match: Balance Between Control and Reach

Phrase match is often the safest default option.

It allows Google to include relevant variations while keeping the core intent intact. Phrase match performs well when you have sufficient conversion data but still want control over search terms and cost per conversion.

Broad Match Modifier: Expanding with Control

The broad match modifier sits between phrase and broad match. It ensures specific keywords appear in the search query while allowing additional variations.

For example:

+holiday +Spain

Both terms must appear in the search query, though the order may vary.

This approach allows the discovery of new keywords while maintaining reasonable control over relevance.

Broad Match: Maximum Reach with Less Control

Broad match should not be the starting point of a campaign, but rather a scaling tool.

It is only advisable when conversion tracking is reliable, and campaigns are optimised for value rather than traffic volume.

Without clear value signals, broad match increases the likelihood that Google optimises for clicks rather than profitable conversions.

The Importance of Negative Keywords

When using broader match types, negative keywords become essential.

They help exclude irrelevant search queries, reduce wasted budget, and improve campaign quality scores.

Negative keywords allow advertisers to maintain the right balance between reach and relevance.

Using Customer Match in Google Ads

Beyond match types, Google Ads Customer Match is a powerful optimisation tool.

With Customer Match, advertisers can upload customer data such as email addresses or phone numbers to create highly targeted audiences.

Google uses this information to find users similar to your existing customers and display personalised ads across platforms, including Search, Gmail, YouTube, and the Display Network.

Privacy and Data Requirements

Uploading customer data through Customer Match must comply with privacy regulations.

Google requires the data to be hashed using the SHA256 algorithm. Accounts must also meet certain requirements, such as customer consent and proper data handling practices.

Sensitive information should be processed carefully, and only necessary fields should be included in uploaded files.

Summary and Best Practices

How to Prevent Wasted Budget from Poor Search Terms

Use this checklist when reviewing your search terms report.

Does the search term generate enough data?

Avoid making decisions based on a single click. Look for patterns across multiple impressions and clicks.

Does the search term contribute to revenue or lead quality?

Evaluate not only conversions but also their consistency and value.

Does the search term appear repeatedly with the same intent?

Recurring converting queries should be added as exact match keywords to improve predictability.

Does the search term show consistently incorrect intent?

Irrelevant queries should be excluded using negative keywords.

Are exclusions limiting the algorithm too much?

Avoid overly aggressive exclusions that may block valuable variations.

This structured approach ensures decisions are based on data rather than intuition.

Ready to Improve Your Google Ads Performance?

If your campaigns are generating traffic but not delivering consistent leads or revenue, your keyword and match type strategy may need improvement.

At ANA DIGITAL MEDIA, we help businesses build high-performance advertising campaigns using data-driven strategies.

Our specialists focus on:

Fill out the lead form below to request a free Google Ads analysis and discover how your campaigns can perform better.

When Is Your Keyword and Match Strategy Ready to Scale?

Scaling only works when Google Ads reacts predictably to additional budget.

Your strategy is ready to scale when:

If any of these conditions are missing, scaling may simply multiply inefficiencies already present in your campaign structure.

Common Mistakes in Keyword and Match Settings

Many Google Ads issues are caused not by a lack of optimisation, but by incorrect initial decisions.

Common mistakes include:

These mistakes may appear harmless initially, but they often lead to significant inefficiencies when budgets increase.

Conclusion: Making the Right Keyword and Match Type Decisions

Choosing the right keywords and match types in Google Ads is not a one-time action but an ongoing strategic process.

These decisions determine:

The safest approach is to begin with keywords that show clear commercial intent combined with tighter match types such as exact and phrase match. This ensures reliable data and prevents the algorithm from learning from irrelevant signals.

Once results become stable and conversion data improves, broader match types can be introduced to scale campaigns without increasing wasted spend.

In summary, match types should be selected based on how much interpretation your campaign data can support. This approach allows advertisers to maintain control, target relevant audiences, and gradually scale profitable campaigns.

By continuously refining keyword strategies, Customer Match audiences, and negative keywords, advertisers can maximise the value of existing campaigns and reach new potential customers with personalised advertising across Google platforms.