1. Focus on User
Involving users early and continually in the process, usability problems can be identified at an early stage when the cost of adjustment is relatively low. By observing users performing real tasks in the real context, valuable information can be obtained which can be used as inputs to the specifications of the project.
2. Empirical Measurements
The UX design process involves a lot trial and measure work. The measurements may be made from one or more of the following: Expert review using standard principles, Usability Tests, and A/B Testing.
3. Iterative Design
The UX design process is more compatible with iterative methodology (e.g. agile and scrum). The whole design/development process will consist of a number of design/development → testing cycles for incremental improvements.
