The monthly Amazon bestseller list refers to the ranking of the most popular books sold on the Amazon website. This list is based on both sales numbers and revenue and includes various formats of publications, such as physical books, e-books, and audiobooks. The rankings are provided by each country or region’s Amazon website, such as the US, UK, and Japan. This list is a valuable reference for readers as it provides timely information on the current most popular books, enabling them to choose books they are interested in or as a gift option. At the same time, publishers and authors can also use the Amazon bestseller list to understand market trends and reader demand and develop better publishing strategies.