IT operations introduce IT self-services to reduce the workload of their personnel in service production and delivery. However, this workload reduction is not self-evident and therefore IT operations must be supported at designing effective IT self-services. The result of the research is a method that guides IT operations at devolving service tasks in IT services. This method is named DESERV IT and includes four method components encompassing a joint meta-model, a visual notation for designing IT services, and procedural recommendations.<eng>