Define Conversions (Primary vs Secondary)

If you know SEO

In SEO, you can optimize for traffic and engagement first. In Ads, automated bidding will optimize spend based on your conversion definition. A bad conversion definition trains the system to buy bad traffic.

Definitions

• Primary conversion: the outcome the business values (purchase, booked call, qualified lead)
• Secondary conversion: supporting signals (add to cart, form start, time on page)

Beginner safe rule

Only one primary conversion per campaign objective.

Examples:

• Lead gen Search: primary = qualified form submit OR qualified call
• E-commerce: primary = purchase with value

Step-by-step

1. List funnel steps (visit -> engage -> submit -> qualified -> sale).
2. Decide which step is worth paying for.
3. Define quality requirements (for example: service area, budget, intent).
4. Document conversion names and owners.

Common mistakes

• Counting every form submit as a qualified lead.
• Using micro-events as primary conversions.

Mini-lab

Write:

• 1 primary conversion
• 2 secondary conversions
• 3 lead quality rules (what makes a lead qualified)

Next Step

Continue to GA4 Linking and Auto-tagging (When to Use UTMs).