Academy / A/B Testing Fundamentals

Build variations that do not break

How visual-editor tests change the page, why selectors break, what you can safely build yourself, and how to protect speed and accessibility.

• Explain how a visual-editor change is applied to the DOM and why it can silently fail
• Decide which changes a marketer can build in a visual editor and which need a developer or a server-side test
• Write a variation brief that specifies stable selectors, states, tracking, speed and accessibility requirements