Delivering improvements
ITIL recommends that a CSI register is kept to log the improvement opportunities and categorise them into small, medium and large. The expected time to implement each opportunity together with the anticipated and measureable benefits should also be indicated. Together, this information allows prioritisation of the improvement opportunities. The CSI register should be held as part of the service knowledge management system. The CSI register is the responsibility and accountability of the CSI manager.
A key to successful improvement is measurement. CSI advocates the use of industry approaches such as the Deming ‘Plan–Do–Check–Act’ model (see Chapter 34) and a process known as the ‘seven-step improvement process’ (see Chapter 32).