An automated software testing system allows automated test script generation with fully parameterized scripts, execution, and result correlation. A software Application Under Test (AUT) includes a process having Graphical User Interface (GUI) windows, objects and data elements. A test thread tree is generated corresponding to these windows, objects and data elements. A data structure is generated to enumerate test cases indicative of the windows, objects and data elements. Also generated is a parameterized script implementing the test cases and having string values instead of hard-coded data. A global change manager automates modifying in the data structure, data object attributes across multiple scripts. A Scenario view or data generation member generates Test Descriptions, automatically documenting the test cases. The script is executed to apply each of the test cases to the AUT and receive responses.