Amazon can be used as an e-commerce platform for buying and selling. As an online marketplace, Amazon provides a platform for sellers to sell their products through its platform. At the same time, consumers can buy these products on Amazon. Amazon offers a variety of product categories, including books, electronics, clothing, food, and more.

Amazon also provides a range of services such as delivery, customer service, and return policies to ensure consumer satisfaction. Therefore, it can be said that Amazon can be used for buying and selling.

Amazon itself is a cross-border e-commerce platform, where buying and selling are carried out.