when and why test automation code example

Example 1: when to choose automation over manual testing

I would choose automation over manual
-If the test cases are high priority test cases
-If the functionality is critical functionality
-If the test cases are too long and too difficult to execute.
-I would automate smoke test cases and also
-we should automate regression test cases as much as possible
based on the priority

Example 2: what is test management

Test management is a activity of managing
a testing process. It is performed using tools
to manage both types of tests, automated and manual,
that have been previously specified by a test procedure.