Express delivery is the tendency of "last mile logistics" of the recent few years. For some companies, this is a way to increase business margins and turnover, since 40% of consumers are willing to pay extra for urgency, for others it is a mandatory rule of the game.
And for ordinary people, it's just a necessity. For example, a person needs medicines as soon as possible.
To make clients satisfied with the purchase and communication with the company is a natural desire of the business. One of the ways to improve the buyer's experience is to offer express delivery or next day delivery , so that a person receives the desired goods sooner and next time again turns to such a prompt company.