In most enterprises, the speed at which information technology (IT) is delivered becomes increasingly important. Lately, many enterprises strive to increase the speed of IT delivery, e.g. through the establishment of a bimodal or fast IT. However, research and practice lack a grounded understanding of how this speed can be defined or measured. This paper advances the understanding of how to measure the speed of enterprise IT while also considering the interdependence with IT quality, resources, costs and business value of IT. We categorize the speed of enterprise IT according to the phases plan, build and run. In our case study, we identified 10 activities to estimate and measure speed of enterprise IT in a very large enterprise based on expert interviews. We describe how the speed of enterprise can be measured in practice and identify factors that can speed up or slow down IT delivery. The findings identify options for increasing the speed through adapting the IT delivery in digital transformation (DT) projects as well though enterprise architecture management (EAM).