Marketing & Paid Advertising

Seed Audience

The foundational group of people used to create a Lookalike Audience.

1 min readLast updated Apr 2026

The foundational group of people used to create a Lookalike Audience.

Why It Matters

Your seed audience quality directly determines your lookalike performance. Garbage in, garbage out. The right seed captures the patterns that make customers valuable, not just patterns of anyone who touched your site. Strategic seed selection is one of the highest-leverage prospecting optimizations.

Practical Example

Scenario

A brand tests three seed audiences: all purchasers (10K people), high-AOV purchasers (2K people), and repeat purchasers (1.5K people).

Result

Repeat purchaser seed produces 50% higher conversion rate than all purchasers seed, despite smaller seed size. Quality > quantity.

Pro Tips

  • 1Minimum seed size is 1,000 for most platforms, but 2,500-5,000 produces more stable lookalikes
  • 2Create seeds based on behavior (purchases, LTV) not just demographics or engagement
  • 3Update seeds monthly to capture recent customer patterns and keep lookalikes fresh

Common Mistakes to Avoid

Using all website visitors as seed—this includes bounces, bots, and tire-kickers
Mixing different customer types in one seed—high-LTV and one-time clearance buyers have different patterns

Frequently Asked Questions

Related Terms

Lookalike Audience
LAL

A targeting feature reaching new people who share characteristics similar to your existing customers.

Custom Audience

A targeting option reaching people who have already interacted with your business.