The global e-commerce market has been growing rapidly, even more so due to the COVID-19 pandemic which caused a number of stationery stores to close down. At the same time, Artificial Intelligence (AI) has also gained prominence. In this article, we review and describe the practical applications of AI which is helping e-commerce businesses. In particular, we have concentrated on AI in some key areas of e-commerces such as online marketing, operations in fulfillment centers, barcode identification , and autonomous delivery methods. The findings and conclusions in this article would be useful for researchers as well as businesses to get an overview of the landscape of AI applications in e-commerces.