Walmart practice of e-commerce retail boosted their sales and business. (indigo 9 digital, 2022, para. 3)

It provided the option to the customer to shop on the comfort of their own home, they do not have to come inside the store and run the shopping cart in every aisle. They just need to place the order from their smartphone and Walmart will give them pick-up time, in this time the customers need to come at the designated pick-up spot and an associate will be ready with their grocery. 

This system has made many customers grocery shopping easy and less time consuming. 

This is the model of Walmart and now we need to connect this model to deontology, Utilitarianism and virtue ethics.

How  the model of Walmart works? Explain in detail.