Interaction design, also known as UX design or user experience design, is an essential part of the design of digital products and services. It focuses on how users interact with a website, app or system to ensure a seamless and user-friendly experience.

The main objectives of interaction design are to improve user satisfaction and efficiency. This is achieved by designing interfaces that are easy to understand and intuitive. The design takes into account how users navigate through the application, how they perform actions and how they receive feedback.

User research is an important aspect of interaction design. This involves analysing the needs, wishes and behaviour of the target group. Through interviews, surveys, usability tests and analysis of usage data, insights are gained that contribute to the design of a user-centred interface.

Another key element is the information architecture. This refers to the organisation of information and functions on a website or in an app. A clear and sensible structure makes it easier for users to find the information they need and complete tasks effectively.

Interaction designers often use wireframes and prototypes to visualise and test design concepts before they go into development. This makes it possible to identify potential problems and make changes at an early stage.

Accessibility is another important aspect of interaction design. Designers need to ensure that their interfaces are accessible to all users, including people with disabilities. This can include the use of screen reader support, keyboard navigation and other accessibility techniques.

The role of interaction design spans various industries, from websites and mobile apps to software applications and hardware devices. Good interaction design contributes significantly to user satisfaction and can strengthen the competitiveness of a product or service.

To summarise, interaction design is a decisive factor for the success of digital products and services. It combines creative thinking, user research and technical expertise to create appealing and user-friendly interfaces that fulfil users' needs.