Software Testing is a process to assure that the actual software product matches the desire results and is defect-free. Software Testing is a crucial part of the development and testing process. Software testing is a structured approach to finding and fixing software errors before they affect users, customers, or the bottom line. In the testing-centric world of today, modern testing tools allow teams to efficiently deliver quality software, on time and on budget.
Software testing is the process of investigating signs of potential errors in computer programs, computer systems, or other software to reduce the likelihood that these errors will cause failures in user operations or system acceptable values. Errors are the flaws, backlogs, or mistakes which make the software work wiggle that results in performance failure.
The level of Software testing was created with the goal of introducing software testing as a vital part of the development lifecycle. There are different level of Software Testing: Unit test which is testing the individual component. Integration testing is examining the integral components. System Testing is testing the whole system throughout. Acceptance Testing is the last and final testing.