Abstract: Example implementations relate to workflow execution. For example, workflow execution may include identifying a plurality of steps of a workflow and a plurality of dependencies corresponding to the plurality of steps, constructing an execution graph for the plurality of workflow steps based on the plurality of dependencies, and executing a plurality of worker executors in a container based on the execution graph, wherein each of the plurality of worker executors are instantiated based on a reference to a worker actor in a bundle registered in a worker repository of the container and wherein each of the plurality of worker executors executes a workflow step of the plurality of workflow steps.