Workflow is a combination of one or more tasks executed in a specific order on a Configuration Item (CI) to achieve a particular service to customer/team/individual.
Task is a sub component of workflow, where it perform a specific action on a single CI.
You can configure the Orchestration Workflows for Incidents, Service Requests (SRs), and Work Orders. In Orchestration Workflows, a condition is defined. If this condition is met, the defined Orchestration Scripts are executed. This does not require any manual intervention from the Analysts and the actions are performed by the Orchestration Scripts if the precondition is met. Using drag and drop, you can add a Script or Condition to the Workflow.