Usability Testing

* Usability means that systems are easy and fast to learn, efficient to use, easy to remember, cause no operating errors and offer a high degree of satisfaction for the user. Usability means bringing the usage perspective into focus, the side towards the user.

It determines how well the user will be able to understand and interact with the system. This is done prior to testing levels.
In other words, Usability-testing is the measurement of how well a website aligns with the behaviors of online users, enabling them to complete their tasks efficiently, effectively, and satisfactorily.