Interaction Design

Interaction Design (IxD or IaD) is the discipline of defining and creating the behavior of technical, biological, environmental and organizational systems. Examples of these systems are software, products, mobile devices, environments, services, wearables, and even organizations themselves. Interaction design defines the behavior (the "interaction") of an artifact or system in response to its users over time.

Interaction designers are typically informed by user research, design with an emphasis on behavior as well as form, and evaluate design in terms of usability and emotional factors.