Planning and controlling are interdependent management functions. Planning establishes goals and how they will be achieved, while controlling monitors performance against those goals. Without plans to monitor against, controlling cannot determine if actual performance is acceptable. Likewise, plans must be implemented and followed, which is the role of controlling. Both functions also look backward to learn from past experiences and look forward to apply lessons learned and make adjustments for the future. Together, planning and controlling work to bridge the gap between current and desired performance.