Pump therapy has existed for over 40 years and provides a more flexible delivery of insulin. To date, almost 25% of type 1 diabetic patients have chosen this therapeutic option. In recent years, it has also been offered to patients with type 2 insulin-requiring diabetes. The choice of insulin pump is based on its indication, the patient's preference, lifestyle and knowledge of the disease. A risk of developing ketoacidosis in case of interruption of insulin delivery exists. Its implementation therefore requires a specialized interdisciplinary care team available in case of emergency.