E-commerce, defined as the buying and selling of goods and services over the internet, has evolved since its inception with the first online sale in 1994, shaping various transaction models such as B2C, B2B, C2C, and C2B. The benefits of e-commerce for both customers and sellers include convenience, cost savings, and expanded market reach, while challenges involve security concerns and competition. The e-commerce industry continues to grow, especially in developing countries like Bangladesh, presenting both opportunities and challenges for traditional businesses.
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