Abstract: An operating system platform built on a transactional datastore is disclosed. The platform comprises a transactional datastore configured to store workflow state information, wherein services of the operating system are included in the transactional datastore. A workflow engine executes a workflow, wherein a portion of the workflow is annotated with decorators specifying infrastructure requirements. The platform includes a provenance database for storing historical versions of data and a scheduler for managing execution of periodic and event-driven tasks.