Big business refers to large companies or corporations that operate on a national or global scale. These organizations typically have significant resources, including capital, technology, and workforce, allowing them to produce goods or services efficiently. They often dominate their respective markets and can influence economic trends and policies. Many big businesses are publicly traded, meaning their shares are available for purchase on stock exchanges. This allows them to raise funds from investors. Examples of big businesses include Apple, Walmart, and ExxonMobil, which have substantial impacts on the economy and employment in various regions.