How can business benefit from Microservices Architecture? (Use Cases)

A popular example I usually explain to people is with an e-commerce application. An e-commerce application designed with microservice architecture would typically involve a separate service for the inventory, user cart, wishlist, payment gateway, authentication and authorization, recommender system and etc. The real benefit of the microservice architecture would be realized during massive inbound traffic times such as Black Friday sales where the active users will be enormous. During that time, we can maintain the traffic by enabling /disabling a few services such as wishlist viewing or less load on the recommendation system. Additionally, the services can be scaled based on the incoming traffic allowing us to handle millions of users at the same with the less cost of the computation power (unleashing the power of cloud platform)