Endurance testing is a type of performance evaluation that assesses how well a system, application, or component can handle prolonged use under specific conditions. This testing helps identify potential weaknesses or failures that may occur over time, ensuring that the product can maintain its functionality and performance levels during extended periods of operation. Typically conducted in controlled environments, endurance testing simulates real-world scenarios where users may continuously interact with the system. It is crucial for applications like web services, mobile apps, and hardware devices, as it helps developers ensure reliability and user satisfaction by preventing issues that could arise from long-term usage.