The business is having lot of changes in performing the business operations in this pressent years. E-Commerce Is one of the best invention of the Century to the business sector and society as whole. The use of E-Commerce at all levels of business The main types of E-Commerce mode are Business-to-consumer (B2C) e-commerce: customers deal directly with the organization, avoiding any intermediaries. Business-to-business (B2B) e-commerce: participants are organizations. Consumer-to-consumer (C2C) e-commerce: participants are individuals, with one serving as the buyer and the other as the seller. The Author has studied the topic in detail about the applications, problems and solutions to these problems which will benefit and will be useful to companies and readers.