Most web based classified according to the industry they operate in. Some of these are large corporations that concentrate on a specific form of industry, including Apple or perhaps Walmart, whilst click this other folks specialize in a specific type of products or services. Examples of companies in which businesses may function include promotion, mattress creation, real estate, and oil. ExxonMobil, for instance, performs business by giving oil to customers. Other industries contain restaurants, retailers, and other small businesses.