In this example, a customer asks for a software modification to an application your company is supporting. The code change itself might be trivial compared to all the other steps and people involved in the process. In this case, there are 3 environments for the application: development, quality assurance, and production. This process can take quite a while to complete, especially if there are coding errors that need rework. Meanwhile, other code modification requests are coming in for the same application so these processes are actually overlapping each other. Is there a better way to handle these concurrent processes?