Most companies are classified according to the industry they operate in. Some of these happen to be large firms that focus on a specific sort of industry, including Apple or perhaps Walmart, although other folks specialize in a particular type of products or services. Examples of companies in which businesses may buy and sell include promoting, mattress creation, real estate, and oil. ExxonMobil, for instance, functions business by providing oil to customers. Additional industries consist of restaurants, retailers, and make m&a deals easier with electronic data rooms tools other smaller businesses.