Software testing has always been essential to the success of the software because

It goes through various testing stages from the conception of the software until the live run.
It goes through numerous tests to make sure that it has no malfunctions and everything is going smoothly not only with the software but with the systems that are dependent on the software. Any errors encountered during the testing stage are corrected.
The testing stage ensures that the errors are addressed on time and the software is retested again for possible errors.
It continues until everything has been addressed and running smoothly,

Automation testing is an alternative means of software testing technique that tests and compares the actual outcome with the expected outcome. Manual tests can be achieved by writing test scripts while automation tests are achieved using an automation testing tool. Automation test is used to automate software tasks and other testing tasks which are difficult to perform manually.

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