Computerized systems and methods are provided to intelligently and dynamically test one or more changes made to one or more applications. Requirements are received for generating one or more changes to a first application and a second version of the first application is generated with one or more changes. A failure probability value for each change is determined and a first set of tests to be executed on the one or more changes based on the failure probability value are identified and then executed on the second version of the first application. If the second version of the first application passes the first set of tests, it moves on to being tested by a second set of tests which are also based on the determined failure probability values. If the second version of the first application does not pass the first set of tests, the defects are identified and the second version is regenerated to cure the defects.