Brad Sugars explains the fourth fundamental of Mastery, “Delivery Mastery,” and three areas with Delivery Mastery – Supply, Quality and Easy to Buy. Brad discusses strategies to make sure the customer gets a consistent performance of the delivery of the product or service. Supply Mastery is the consistent delivery of product and service. To maximize the supply of product, it is important for businesses to under-promise and over-deliver. Quality Mastery is the process of making sure the service happens all of the time, that it gets done as often as possible, making sure it is delivered ahead of time, not just on time. Easy to Buy Mastery is the process of making your product easy to purchase. Brad gives the example of McDonald’s as using Supply, Quality and Easy to Buy Masteries.