Most (if not all) activities involve 2 stages - Preparation and then Execution. For any activity to be executed effectively and in a timely manner , preparation is key. Lets take the example of the activity of preparing to go work in the morning. If you need to iron your shirt or find your socks then you will be much slower than if you had those things prepared. You will also will be more frustrated. Cooking is another example where the preparation of your ingredients and tools before hand is vital for a satisfactory result. There many, many other such examples.
In a company setting preparation usually resolves around getting the right information and mobilizing the right people. From the information perspective data can be stored in many locations. The more spread out the information the longer it will take to prepare the data and the less accurate the information will be. It is therefore vital that data is organised and accessible to everyone to meet repeatable requirements. I highlight repeatable because one-off activities many require additional new preparation. But most activities in a given industry are repeatable. Skilled management are able to recognise those repeatable patterns and define strategies to streamline and optimise Preparation.