"Should this button be red or blue?"

If that's your biggest A/B testing question, you're playing in the kiddie pool while your competitors swim in the deep end.

Here's the truth: Most A/B tests fail because brands test surface-level changes instead of fundamental assumptions.

An example of an A/B testing process with a countdown timer.

The Testing Hierarchy (From Highest to Lowest Impact)

🎯 Level 1: Value Proposition (Potential lift: 50-200%)

  • Core product messaging

  • Primary benefit claims

  • Target audience assumptions

  • Pricing strategy

🎯 Level 2: Trust & Social Proof (Potential lift: 20-80%)

  • Review placement and format

  • Testimonial types (video vs text)

  • Authority indicators

  • Risk reversal offers

🎯 Level 3: User Experience (Potential lift: 10-40%)

  • Page layout and flow

  • Navigation structure

  • Form length and fields

  • Checkout process

🎯 Level 4: Visual Elements (Potential lift: 2-15%)

  • Colors and fonts

  • Image styles

  • Button design

  • Spacing and sizing

The 80/20 Testing Strategy

Spend 80% of your testing budget on Levels 1-2, 20% on Levels 3-4.

Why? Because changing "Sign Up Now" to "Get Started Today" might lift conversions 3%. But changing your core value prop could double them.

High-Impact Tests to Run This Quarter

🧪 Value Prop Test: Problem-focused vs. solution-focused headlines 🧪 Social Proof Test: Customer count vs. star ratings vs. testimonials 🧪 Trust Test: Guarantee placement (header vs. product page vs. checkout) 🧪 Urgency Test: Inventory levels vs. time limits vs. social pressure

The Testing Calendar

  • Week 1: Launch value proposition test

  • Week 2: Analyze results, plan social proof test

  • Week 3: Launch social proof test

  • Week 4: Results analysis and planning

One test at a time. Let it run for statistical significance. Learn. Iterate.

The Million-Dollar Question

Before starting any test, ask: "If this wins by 50%, would it meaningfully impact our business?"

If the answer is no, test something bigger.

What's the biggest assumption about your customers that you've never tested?