Benefits of Automation testing are as follows.

It allows execution of repeated test cases
It enables parallel execution
Automation Testing encourages unattended execution
It improves accuracy. Thus, it reduces human-generated errors
It saves time and money.

Automation testing with Selenium offers several benefits, which contribute to its popularity in the software testing community. Some key advantages include:

Reusability: Automated test scripts can be reused across different versions of the application or in various testing environments, saving time and effort in script creation.
Consistency: Automated tests perform the same steps and checks consistently every time they run, ensuring that the testing process remains stable and predictable.
Accuracy: Automation eliminates the possibility of human errors in repetitive tasks, leading to more reliable and accurate test results.
Efficiency: Automated tests can execute quickly and efficiently, allowing for faster feedback on the application’s functionality and detecting defects early in the development cycle.
Parallel Execution: Automation allows for the simultaneous execution of multiple test cases, speeding up the overall testing process.
Regression Testing: Automation is particularly useful for conducting regression tests, ensuring that new changes do not negatively impact existing functionalities.
Increased Test Coverage: Automation enables testing of a larger number of test cases and scenarios, providing broader coverage compared to manual testing.
Cost Savings: Although there is an initial investment in setting up automated testing, it often leads to long-term cost savings by reducing the need for manual testing efforts and increasing overall productivity.
Continuous Integration (CI) Support: Automation seamlessly integrates with CI tools, allowing for the continuous testing of software as new code is added to the repository.
Faster Time to Market: With quicker feedback on the software’s quality, automation helps accelerate the development and release cycles, leading to a faster time to market.

It’s important to note that while automation testing offers numerous advantages, it may not be suitable for every scenario. There are cases where manual testing is still essential, such as exploratory testing, usability testing, and certain types of ad-hoc testing. The choice between automation and manual testing depends on the specific requirements and goals of the testing process.