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How to Use AI to Create Effective Google Ads

Written by Lautaro Schiaffino | Oct 30, 2025 9:55:10 PM

 

If You're Still Optimizing Like It's 2018, You're Losing Money. AI in Google Ads is no longer optional—it automates bidding, selects audiences better than a manual operator, and combines creatives at a speed no human can match. Here’s how to use AI to generate Google Ads that improve your ROI without losing your brand voice or control.

What Is Artificial Intelligence in Google Ads

  • Definition: Systems that analyze signals (query, device, context, intent, LTV) to adjust bids, segment audiences, and assemble creatives in real time.

  • Vs. Manual Management: Makes instant decisions, scales to millions of combinations, and reduces human bias.

  • Key Terms:

    Machine learning

    Smart Bidding (automated bidding)

    Audience signals (first-party + intent)

    Dynamic creatives/assets (headlines, descriptions, images, video)

Key Benefits of Using AI in Your Campaigns

  • Time Savings — Automates bidding, segmentation, and creative testing.

  • More Precise Targeting — Uses intent signals and first-party data to reach those who actually convert.

  • Better ROI — Optimizes for conversions/value, allocating budget to what works.

  • Scalability — Learns and adapts across channels and formats without increasing operational load. 

Data & Tracking Requirements for Reliable Results

Without clean data, AI flops. Fix this before increasing budget.

1. Conversion Setup

  • Define primary (sales, SQL) and secondary goals (microconversions: add-to-cart, key page views).

  • Implement Google Tag/GA4 and validate with the diagnostics assistant.

  • Import offline conversions (from CRM) and use values to optimize for value/ROAS.

  • Reliable data = shorter learning periods and more stable decisions.

2. Feed and Landing Page Quality

  • Feed must have complete, updated titles, descriptions, attributes, price, and stock.

  • Landing pages should be relevant, fast, and mobile-first; with consistent messaging and offers.

  • AI uses site/feed data to assess relevance and build asset combinations.

3. Audience Signals From CRM

  • Upload customer lists, LTV, and lifecycle stages (lead, MQL, SQL, customer).

  • Connect your CRM and use tools like Darwin AI to enrich behavioral signals.

  • Respect privacy/consent rules; update lists regularly.

Step-by-Step: Setting Up an AI-Powered Campaign

1. Choose Goal and Campaign Type

  • Goals: Sales, Leads, Traffic, Consideration.

  • Recommended Types: Performance Max (multi-channel), Search with RSA + Smart Bidding, Discovery/YouTube with action-based goals.

  • Align goal ↔ conversion signal (e.g., purchase value if targeting ROAS). 

2. Enable Auto Creative Suggestions

  • Activate RSAs (Responsive Search Ads) and asset recommendations.

  • Use automated and A/B variations for headlines, descriptions, and images.

3. Add Audience Signals

  • Upload customer lists, interests, segments, and themed keywords.

  • Connect CRM and Darwin AI for richer signals (intent, stage, affinity). 

4. Set Budget and Bidding Strategy

  • Strategies: Maximize conversions/value, Target CPA, Target ROAS.

    • Suggested budget: 30–50 conversions/month per campaign (or per asset group in PMax).

    • Allow 10–14 days of learning; avoid drastic changes.

  •  

5. Review Preview & Launch

  • Check creative coverage, extensions, and landing page consistency.

  • Launch, monitor the learning phase, and don’t over-optimize in the first week. 

How to Use AI to Write Headlines & Descriptions Without Losing Your Voice

1. Define Tone and Main Keyword

  • Tone (direct/expert/friendly), banned/mandatory phrases, value proposition, and primary/secondary keywords.

2. Request Variants From the AI Tool

  • Ask for 5–10 variants per block with specific lengths (headlines ≤30 characters; descriptions ≤90).

  • Request different angles: benefit, social proof, soft urgency, objection-handling.

3. Validate for Consistency & Compliance

  • Human review to ensure brand voice, verifiable claims, and Google Ads policies.

  • Regulated industries: add disclaimers and apply geo/language filters as needed.

    Helpful Prompts (Copy/Paste and Adapt)

 
Act as a Google Ads copywriter. Product [X], main keyword [Y].
Generate 10 headlines ≤30 characters with clear benefits; include 2 with social proof and 2 with soft urgency.
Tone: [expert and friendly]. Avoid absolute superlatives.
 
Write 6 descriptions ≤90 characters for [product/service].
Each with a different CTA (Buy/Book/Try).
Align messaging with landing page [URL].
 
Turn these 4 benefits into 10 RSA combinations (headline+description),
noting the angle (benefit/objection/urgency/authority).

How Many Creative Variants Should I Test to Optimize?

 

  • RSAs: 8–15 headlines, 4–6 descriptions.

  • PMax: 3–5 key images per format + 1–2 short videos + 5–8 headlines + 4–6 descriptions.

  • Avoid overload with low volume: too many assets with few impressions slow down learning.

  • Refresh every 4–6 weeks: keep winners, rotate out losers.

Best Practices for Performance Max & AI Max

1. Provide Relevant Initial Signals

  • Upload customer lists, themed queries, and priority landing pages.
  • Optimize for value (margins) and use a realistic ROAS target.

2. Strategic Asset Use

  • Upload variety: images (1:1, 4:5, 1.91:1), short videos, headlines, descriptions, and extensions.

  • Group assets by intent/segment (Brand, Competitor, Category, Retargeting). 

3. Report Interpretation

  • Review search terms, audience segments, and asset combinations.

  • Distinguish brand vs. non-brand; assess incrementality and cross-channel paths. 

When to Step in Manually & Avoid AI Errors

1. Anomalous Performance Alerts

  • Sharp ROAS/CPA drops, abnormal spend, weird channel mixes.

  • Pause problematic variants and adjust bids/budgets gradually (don’t overhaul everything at once).

2. Brand and Legal Reviews

  • Regular audits of copy/creatives.

  • Check industry restrictions (finance, health, housing, automotive), locations, and sensitive claims. 

External Tools & How to Integrate Them With Google Ads

1. Hypotenuse for Brainstorming

Ideate hooks/angles and initial variants to feed your RSAs/PMax.

2. Looker Studio for Reporting

Insight dashboards; unify Ads, GA4, CRM to analyze contribution by channel/audience/creative.

Frequently Asked Questions About AI in Google Ads

How do I speed up AI learning if my account is new?

Import offline conversions and set up high-value conversion actions. Use customer lists to provide initial context, allocate enough budget, and avoid major changes during the first 10–14 learning days.

Is AI still useful with small budgets?

Yes, but learning will be slower. Narrow targeting, start with one campaign type (e.g., Search with RSA + Smart Bidding), and scale as performance improves.

Is AI safe for regulated industries like real estate or automotive?

Yes, as long as you configure exclusions and compliance (location, copy, sector restrictions) and maintain continuous human review of copy, creatives, and disclaimers.

When should I switch from Target CPA to Target ROAS?

When you can assign reliable value to conversions and have steady volume. Target ROAS is better for optimizing margins and product mix.

How do I stop AI from overspending in Performance Max?

Define value-based conversions, use intent-based asset groups, provide high-quality audience signals, and scale budget gradually. Monitor asset combinations and brand vs. non-brand mix.