A production scheduler focuses on short-term execution, while a production planner focuses on long-term strategic planning to meet production goals. A production planner determines what, when, and how much to produce, while a production scheduler determines who and when of the production. A production scheduler provides detailed information about the execution of operations, considering sudden production changes, machine breakdowns, planned and unplanned downtime, and more. Production planning involves making strategic decisions to set a direction for production.