To create applications and systems that are easy to use, it is crucial to understand the user and the context in which the app will be used. Understanding the context helps design systems that anticipate use cases at a relevant time of use. The more unobtrusive and transparent the experience is at the time of use, the better the design. This means the user does not have to think about the device he is using, changes in the environment, or changes in context, and can rely on great functionality and ease of use independent of his situation.
In traditional systems, the context of use did not change much. Whether the use was in the office or at a personal computer at home, the surroundings were similar and there was no need to adapt to different environments. In today's world, smartphones, tablets, laptops, and smart TVs provide different services in different contexts. These services are consumed by a variety of users and require different interaction models, use cases, and planning. For this reason, UX professionals should first design for the context of use in order to provide better experiences and ultimately enhance the intended purpose of the product.
Via Nicolas Weil