Two types of user licenses are available for users of Domino Data Science Platform: Practitioner and Results Consumer. A Practitioner role is assigned to users who need to run workloads and contribute to projects. Results Consumers can log in to the platform with read-only privileges. The platform nodes or workloads that are defined by Practitioners (Launchers, Published Apps) primarily serve Results Consumers. Practitioners have unique requirements that are driven by the types of problems and amount of data that is involved in their projects. These requirements define not only the number of servers that are used in the compute grid, but also the blend of configurations that are necessary.