In user-centered design, designers use a mixture of investigative methods and tools (e.g., surveys and interviews) and generative ones (e.g., brainstorming) to develop an understanding of user needs.
Generally, each iteration of the UCD approach involves four distinct phases. First, as designers working in teams, we try to understand the context in which users may use a system. Then, we identify and specify the users’ requirements. A design phase follows, in which the design team develops solutions. The team then proceeds to an evaluation phase. Here, you assess the outcomes of the evaluation against the users’ context and requirements, to check how well a design is performing. More specifically, you see how close it is to a level that matches the users’ specific context and satisfies all of their relevant needs. From here, your team makes further iterations of these four phases, and you continue until the evaluation results are satisfactory.