Computer technology is widely used across many business areas like communication, inventory management, customer relationship management, payroll, advertising, data management, human resources, and more. The document discusses how computers automate traditional business processes and are used at different management levels. Businesses now rely on computers and digital tools for tasks like emailing, online meetings, tracking inventory levels, storing customer interactions, managing payroll, creating digital ads, storing documents online, analyzing sales data, and automating HR functions like recruiting and training. Computers provide speed, accuracy and accessibility of information to operational, middle, and top level management.