User Research means involving users in design process, The forms can be online survey, user interview, contextual inquiry, design thinking workshops, competitor analysis. Through user research, designers can identify user needs and behavior to optimize products and services.

Product is evaluated by usability, human factor or UX experts with extensive experience. Through heuristics evaluation or cognitive walkthrough, the expert points out potential issues with the product and can provide a general usability assessment quickly.

In usability lab testing, users follow pre-defined scenarios. Testing session takes place in a room divided into two parts by a two-way mirror, moderator with participants are in one part of the room while observers are in the other. Usually during a session respondents’ desktops and facial expressions are recorded.

Eye-tracker is used to trace user's gazes. Products analyzed with the use of this method are graphic designs, operating websites, marketing material. It's an optimal understanding of visual scan patterns and stopping factors in visual attention.

Heat map traces all clicks and provides real-time analytics about how users interact with your web page (website or app) right now, helping you understand which are the best performing contents and which are less attractive to users. Heap map can test the usability and traffic flow on websites to significantly improve conversion rates of landing pages.

Functional Testing is implemented to check whether all required functions of a software is working accurately or not.