There is provided a computer-implemented method and system for provisioning a virtual development and test environment for testing a mainframe computer, comprising: obtaining an indication of a software change to an application on the mainframe computer; receiving a request, from a requesting device, for testing the software change. Said method and system further comprises, in response to the request: receiving, from the mainframe computer, configuration data characterizing the software change and characterizing the application; automatically provisioning, using the configuration data, an instance of a virtual testing environment for the mainframe on a cloud network for testing the application; and, based on the configuration data, automatically providing one or more test scripts to the virtual testing environment for testing the software change to the application on the virtual environment, the one or more test scripts further generated based on automatically determining from the configuration data, a set of prior test scripts implemented for another application similar to the application and having a previously implemented software change.