E-retailing involves using technology like computers and the internet to sell a wide range of products globally. It provides opportunities for companies to reach a larger customer base and potentially increase profits while lowering costs compared to physical stores. Companies can make their products available worldwide by advertising on other sites, through social media, existing customer contacts, and paid advertisements. Benefits for e-retailers include lowered operating costs from not having physical storefronts, reduced risk of theft, and access to a greater customer pool leading to higher potential profits.