Value Stream Mapping (VSM) is a -very- useful tool to gain insight in the workflow of a process and can be used to identify both Value Adding Activities and Non Value Adding Activities in a process stream while providing handles for optimizing the process chain. The results of a VSM can be used for many occasions: from writing out a business case, to defining a prioritized list to optimize processes within your organization, to pinpointing bottlenecks in your existing processes and gain a common understanding of process related issues.
When creating a VSM of your current software delivery process you quite possibly will be amazed by the amount of waste and therefor the room for improvement you might find. I challenge you to try this out within your own organization. It will leave you with a very powerful tool to explain to your management the steps that need to change, as it will leave you with facts.
To quickly get you started, I wrote out some handles on how to write out a proper Value Stream Map.