What Are the Key Benefits of Parallel Testing in TestNG?

Parallel testing in TestNG offers several key benefits, particularly in speeding up test execution. By running tests simultaneously across multiple threads or machines, it significantly reduces the overall time required for testing. This is especially beneficial for large test suites. In Selenium automation testing, parallel execution enables testing on multiple browsers or devices at once, ensuring broader coverage in less time. Additionally, it improves resource utilization, as multiple tests can be run concurrently on available hardware. Parallel testing also accelerates feedback loops in continuous integration (CI) pipelines, enhancing the speed and efficiency of the entire testing process.