Automation – An overview

Any software product, no matter how accomplished by today’s testing technologies, has bugs. Some bugs are detected and removed at the time of coding. Others are found and fixed during formal testing as software modules are integrated into a system. However, all software manufacturers know that bugs remain in the software and that some of them have to be fixed later.So, After every release we have to do the regression testing to check the functionality of the software i.e. we have to execute same set of simple test cases each and every release.Here the software automation comes into play.
We can automate those regression test cases by writing scripts. But not all test cases can be automated by the technology we have now,still it is very useful and reduce the time and cost comparte to manual testing and a tester can devote himself more into testing of complex functionalties.