Theory of Constraints (TOC) is a way of looking at how to solve a problem. It's a way of thinking that helps you find the best solution by looking at the parts of the problem that cause it to slow down or not work properly. For example, if you want to make a cake, the ingredients might be one constraint, like too little sugar or eggs. The oven temperature might be another constraint, like it needs to be just right for the cake to turn out properly. TOC helps you focus on the constraints and how to overcome them or make them better so you can get the best result.