
Surprising lessons from 20,000 experiments

fundamental principle is to commit to testing different approaches, measuring the results, and altering your campaigns in response
Ben Hunt • Convert!: Designing Web Sites to Increase Traffic and Conversion
Making A/B testing a habit (even if you run just one test a week) will improve your efficiency in a traction channel by two or three times.
Gabriel Weinberg • Traction: How Any Startup Can Achieve Explosive Customer Growth
In landing page optimization, many people insist on extracting so-called “learnings” from their test results. Hindsight is used to rationalize why a particular landing page version had a higher conversion rate.
Maura Ginty • Landing Page Optimization: The Definitive Guide to Testing and Tuning for Conversions
Making Websites Win: Apply the Customer-Centric Methodology That Has Doubled the Sales of Many Leading Websites
amazon.com
Surveys won’t tell you how to create the best layouts and content to maximize your conversion rate, however. Only the most serious usability problems will be revealed with a survey.