User Personas and UI Design
Personas are rooted in thorough research and used to create a portrait of your user’s needs and characteristics. While your product may have tens of thousands of users, most of them share similar needs and characteristics. User demographic research and user testing will be among the first steps in creating several workable personas.
It is preferable to get some insights to your personas from your actual users, even giving them a name, profile photo and descriptions of their user requirements, pain points and goals.