"AB Tasty, the French A/B testing specialist, has published this guide for the benefit of those who are implementing A/B testing and would like to know how to conduct truly effective tests."

A beautiful, HTML5 exploration of the HEART methodology: Happiness, Engagement, Adoption, Retention, Task Success. " different members of your team have different ideas about the goals of your project. This process provides an opportunity to build consensus about where you're headed." - How to Choose the Right UX Metrics for Your Product