There are many different ways to conduct specific businesses, click this but the majority of businesses are grouped by industry. Some businesses are small and dedicated to a single market, while others will be large companies that duration several industrial sectors. A great example of this would be the retail big Walmart or Apple. Companies define their particular businesses by simply industry, including mattress development, advertising, and real estate. Businesses are defined the chosen type of transactions they execute. ExxonMobil conducts business by giving oil to their customers.