What is load testing primarily concerned with?

Load testing is primarily concerned with measuring how the system behaves under expected user loads. This type of testing aims to evaluate the application's performance and response times when subjected to a specific amount of traffic or usage. By simulating multiple users accessing the system concurrently, the testing identifies potential performance bottlenecks, resource limitations, and overall system stability under load conditions.

Understanding load testing is crucial as it helps ensure that the application can handle the expected number of users without degradation of performance. This leads to a better user experience and assists in identifying any necessary scaling or optimization before the application is deployed in a live environment.

Other aspects such as security vulnerabilities, integration of components, and usability features are important but do not fall under the primary focus of load testing. These areas are typically addressed through different types of testing, such as security testing, integration testing, and usability testing respectively.