Introducing RAIL: A User-Centric Model For Performance — Smashing Magazine

RAIL is a model for breaking down a user’s experience into key actions. It provides a structure for thinking about performance, so that designers and developers can reliably target the highest-impact work. The RAIL model is a lens to look at a user’s experience with a website or app as a journey comprising individual interactions. Once you know each interaction’s area, you will know what the user will perceive and, therefore, what your goals are. Sometimes it takes extra effort, but if you’re kind to the user, they’ll be good to you.