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A/B Testing Best Practices

Every AdScail campaign includes an A/B testing framework. Here's how to use it to systematically improve your results.

What AdScail Generates

Your testing section includes:

  • Test hypotheses: What we think will work and why
  • Variant suggestions: Specific A vs B recommendations
  • Success metrics: What to measure and target benchmarks
  • Test priority: Which tests to run first for maximum impact

Setting Up Tests

  1. Pick one variable: Don't test headline AND image together
  2. Create variants: Use AdScail's suggestions or create your own
  3. Set up in platform: Use native A/B testing or create duplicate ad sets
  4. Allocate budget: Split evenly between variants
  5. Wait for significance: Don't call winners too early

Testing Hierarchy

Test things in order of impact:

  1. Offer/Angle: What you're selling and how you position it
  2. Hook: First 3 seconds of video or headline
  3. Creative format: Video vs image vs carousel
  4. Body copy: Long vs short, different messaging
  5. CTA: Different calls-to-action

Reading Results

Key metrics to compare:

  • CTR: Which variant gets more clicks?
  • CPC: Which costs less per click?
  • Conversion rate: Which turns more clicks into customers?
  • CPA/ROAS: Which is more profitable?

Important: High CTR doesn't always mean better results. A variant with lower CTR but higher conversion rate might be more profitable.

When to Call a Winner

  • At least 1,000 impressions per variant
  • At least 100 conversions total (ideally 50+ per variant)
  • 95% statistical significance (use a calculator)
  • Difference is meaningful (10%+ improvement, not 2%)

After the Test

  1. Document learnings: What worked? What didn't? Why?
  2. Scale the winner: Increase budget on winning variant
  3. Plan next test: Use learnings to inform your next hypothesis
  4. Update brand profile: If you learned something about your audience, save it

Pro Tip

Keep a testing log. After 10-20 tests, you'll have a playbook of what works specifically for YOUR audience. That's worth more than any best practice guide.