Total IT spending as a percentage of revenue, total IT spending per user, and total IT spending per PC are three useful metrics for managing an IT organization and benchmarking against other companies. Total IT spending as a percentage of revenue indicates how efficiently a company spends on IT compared to industry standards and allows identification of opportunities for improvement. Total IT spending per user and per PC provide additional perspectives beyond total spending as a percentage of revenue to account for factors like shared devices. Benchmarking against other companies using these metrics helps identify best practices and areas for process improvement to increase efficiency and reduce costs.