A/B 테스트 디자인 버전 관리

## 100. A/B 테스트 디자인 버전 관리 ``` Design an A/B test variant management system: **Variant Structure**: ``` 📁 A/B Test: Checkout CTA Button ├── 📄 Test Plan ├── 🎨 Variant A (Control) ├── 🎨 Variant B (Larger CTA) ├── 🎨 Variant C (Green CTA) ├── 📊 Results └── 📝 Decision Log ``` **Test Plan Document**: ```markdown # A/B Test: Checkout CTA Button ## Hypothesis If we increase the CTA button size by 20% and change color to green, then checkout conversion rate will increase by 5% because the button will be more visible and associated with positive action. ## Test Details | Field | Value | |------------------|---------------------------------| | Test ID | ABT-2026-042 | | Start Date | Feb 1, 2026 | | End Date | Feb 14, 2026 | | Traffic Split | 33% / 33% / 34% | | Sample Size Goal | 10,000 users per variant | | Confidence Level | 95% | ## Primary Metric - Checkout completion rate ## Secondary Metrics - Add to cart rate - Time to checkout - Button click-through rate ## Guardrail Metrics - Page load time (should not increase) - Error rate (should not increase) - Bounce rate (should not increase significantly) ## Targeting - All users - Desktop and mobile - Excluding: returning customers with 3+ orders ``` **Variant Canvas Setup**: ``` ┌─────────────────────────────────────────────────────────┐ │ ABT-2026-042: Checkout CTA Button │ ├───────────────────┬───────────────────┬─────────────────┤ │ Variant A │ Variant B │ Variant C │ │ (Control) │ (Larger) │ (Green) │ ├───────────────────┼───────────────────┼─────────────────┤ │ │ │ │ │ ┌───────────┐ │ ┌─────────────┐ │ ┌───────────┐ │ │ │ Checkout │ │ │ Checkout │ │ │ Checkout │ │ │ │ $99 │ │ │ $99 │ │ │ $99 │ │ │ └───────────┘ │ └─────────────┘ │ └───────────┘ │ │ h: 48px │ h: 56px │ h: 48px │ │ bg: blue-600 │ bg: blue-600 │ bg: green-600 │ │ │ │ │ └───────────────────┴───────────────────┴─────────────────┘ ``` **Variant Documentation**: ```markdown ## Variant A: Control (Current Design) - **Description:** Current checkout button - **Button specs:** - Height: 48px - Padding: 12px 24px - Background: blue-600 (#2563EB) - Font: 16px, semibold - **Screenshot:** [variant-a.png] ## Variant B: Larger CTA - **Description:** 20% larger button - **Changes from Control:** - Height: 48px → 56px (+17%) - Padding: 12px 24px → 16px 32px - Font: 16px → 18px - **Hypothesis:** Larger target = easier to click - **Screenshot:** [variant-b.png] ## Variant C: Green CTA - **Description:** Green color variant - **Changes from Control:** - Background: blue-600 → green-600 (#16A34A) - No size changes - **Hypothesis:** Green = "go" = positive action - **Screenshot:** [variant-c.png] ``` **Naming Convention**: ``` [Test ID]-[Variant Letter]-[Description] Examples: ABT-2026-042-A-control ABT-2026-042-B-larger-cta ABT-2026-042-C-green-cta ``` **Git Branch Structure**: ``` main └── ab-tests/ABT-2026-042 ├── variant-a-control (base) ├── variant-b-larger └── variant-c-green ``` **Implementation Tracking Specs**: ```markdown ## Analytics Implementation ### Even ... (내용이 길어 일부만 표시됩니다)