It is the most widespread theoretical framework among user experience specialists who, when creating a product or service, often digital, takes the end user into account from its conception and throughout its development, with the aim that the experience is intuitive, helpful, and enjoyable for as long as a person interacts with it.
In practice, this approach requires a thorough understanding of users and their behavior, actively involving them in the various phases of the process, evaluating the product or service with them iteratively, and adopting a multidisciplinary perspective.
Acronym or abbreviation:
User Centered Design: DCU
User Centered Design, UCD