Continual Service Improvement (CSI)

Continual Service Improvement (CSI) is the ITIL principle of continuously evaluating and optimizing IT services and processes. It is not enough to keep running services unchanged once implemented; regular reviews should identify where there is room for improvement. This can mean analyzing weaknesses, obtaining customer feedback, evaluating service reports and deriving measures from them – for example to become faster, more reliable or more cost-efficient.

Within the ITIL framework, CSI constitutes a core area of its own and connects the other ITSM disciplines with an improvement cycle. The PDCA cycle (Plan-Do-Check-Act) is often applied for this purpose: improvements are planned and implemented, the results are measured, and further adjustments are made where necessary. Examples of continual improvement include shortening the average resolution time through additional staff training, reducing the number of incidents through preventive problem resolution, or increasing self-service adoption through better knowledge articles. It is important that CSI is carried out systematically and in a structured manner – spontaneous ad-hoc changes without measurement do not count. Organizations often establish KPIs and target values for this purpose, which are reviewed regularly.

Ultimately, continual service improvement fosters a culture of constant optimization in the IT organization, so that services keep pace with business requirements and changing technology. Suitable ITSM software helps to manage such processes centrally and document them traceably.

See also: ITSM and Mean Time to Resolution.