When to use performance test?

Performance testing should be used when you want to evaluate how a system performs under various conditions, particularly in terms of responsiveness, stability, and speed. It is essential before launching a new application or after significant updates to ensure it can handle expected user loads. Additionally, performance testing is useful when identifying bottlenecks or issues that could degrade user experience. This type of testing helps ensure that the system meets performance requirements and can scale effectively as demand increases.