Software testing is a challenging and complex process that requires knowledge of many different areas. From understanding the business to knowing what types of bugs can be introduced, there's a lot to consider when testing a software. The difficulty in testing software has increased as developers produce more intricate codes with more outstanding features. The number of defects found during development increases because the complexity increases; however, it decreases if the developer uses static analysis tools or other automated methods for finding and fixing errors early on in the development cycle.