Online supermarkets are digital platforms that allow customers to purchase groceries and household items over the internet. Users can browse a wide range of products, add them to their virtual shopping carts, and complete their orders from the comfort of their homes. Payment is typically made online, and many services offer home delivery or curbside pickup options. These platforms often provide features like product reviews, price comparisons, and personalized recommendations based on previous purchases. Popular examples of online supermarkets include Amazon Fresh, Walmart Grocery, and Instacart, which aim to make grocery shopping more convenient and efficient for consumers.