Too Long; Didn't Read

Amazon, which started as an online bookstore in 1994, has grown into a retail giant selling almost everything imaginable in 2020. It operates through two main business units: the first-party retail, where it sells products wholesale, and the third-party marketplace, allowing other companies to sell directly. The marketplace's vast selection, powered by millions of sellers, contributes significantly to Amazon's success, making up 60% of its unit sales in 2023. This fusion of retail and marketplace arms, along with its unprecedented scale, has made Amazon a dominant force in the e-commerce world, with its marketplace generating enormous profits, nearly (redacted)% of its net income in 2021.

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