To ensure that a software application meets its performance requirements, it is important to understand and use the different terminologies and techniques associated with software performance testing. 

It aims to provide visibility on the potential performance bottlenecks, as well as identify any potential errors and failures. As such, it is essential to validate the production performance of these systems before release onto the live environment.

It can take many forms. For example, system performance testing evaluates the system’s overall speed and efficiency in responding to user inputs. Similarly, web application performance tests assess a web application’s response time and resource consumption when exposed to increased load from multiple sources of traffic. Load testing ensures that an application can support a large number of simultaneous users by simulating many different user requests at once. Also please remember that performance testing is a type of non-functional testing. 

Performance testing, a subset of performance engineering, is a computer science practice which strives to build performance standards into the implementation, design and architecture of a system.