What type of testing measures the stability and functionality of a system under different workloads?

Performance testing assesses the stability and functionality of a system while subjected to various workloads. This testing is pivotal for understanding how the system behaves under different conditions, such as high traffic or extensive data processing. Specifically, performance testing evaluates key aspects like response times, throughput, resource usage, and overall scalability of the application.

This type of testing is essential for identifying bottlenecks or weaknesses in a system that could affect user experience or system reliability. By simulating different workload scenarios, performance testing helps ensure that the system can handle expected and peak loads effectively, making it a critical part of the software development lifecycle.

The other testing types do not focus on workload variability. Regression testing focuses on verifying that new code changes do not adversely affect existing functionality. User acceptance testing is performed to ensure the system meets business needs and is ready for end-users. Integration testing examines how different components of a system work together rather than their performance under load.