Most businesses are classified based on the industry they will operate in. Some of these happen to be large corporations that concentrate on a specific type of industry, just like Apple or Walmart, when click this link here now others specialize in a particular type of services or products. Examples of sectors in which businesses may handle include advertising, mattress creation, real estate, and oil. ExxonMobil, for instance, performs business by giving oil to customers. Additional industries include restaurants, shops, and other small businesses.