Human-computer interaction (HCI) studies how people interact with computers and technology. It is an interdisciplinary field that draws on elements of computer science, psychology, and design to understand how people and computers communicate with each other and to design technology that is easy and intuitive for people to use. HCI is concerned with the design, evaluation, and implementation of interactive computing systems for human use and with the study of the major phenomena surrounding them. HCI research and development efforts have led to many of the technologies we use daily, such as graphical user interfaces, touch screens, and voice-controlled assistants.

Human-computer interaction (HCI) and user experience (UX) are closely related fields focusing on how people interact with technology. HCI is a broad field that encompasses the design, evaluation, and implementation of interactive computing systems, while UX design is a specific subfield that focuses on creating positive experiences for users of digital products and services. So, in a way, UX design is a subset of HCI, and the two fields often overlap in their goals and methods. Both HCI and UX design aims to create technology that is easy, intuitive, and enjoyable for people to use. Both fields use a combination of user research, design, and evaluation methods to achieve this goal.