What are the business processes applicable to the combination of e-commerce and traditional business?

Buying and selling fashion, buying and selling automobiles, buying and selling investment and insurance products, and buying and selling books and laser discs. The business categories that apply to both e-commerce and traditional business are the purchase and sale of fashion, the purchase and sale of automobiles, the purchase and sale of investment and insurance products, and the purchase and sale of books and laser discs. E-commerce is the activity of buying and selling products electronically through online services or the Internet.