E-commerce, or electronic commerce, refers to the buying and selling of goods or services using the internet. It involves online transactions between businesses (B2B), businesses and consumers (B2C), or even between consumers (C2C). E-commerce platforms enable customers to browse products, place orders, and make payments digitally, often with home delivery services. It has revolutionized traditional retail by providing convenience, a wider selection, and global reach. Common examples include online stores like Amazon, eBay, and Shopify. E-commerce also includes services like online banking, digital downloads, and subscription-based content, making it a vital part of today’s digital economy and daily life.