Workday fits companies of about 1,000 to 3,500 employees, especially with fast workforce growth, international operations, or about ten P&Ls. Sage Intacct and Sage HCM fit companies under about 1,000 employees that have outgrown QuickBooks and spreadsheets, want to stay cost-conscious, and have fewer than five to ten P&Ls. Workday and Sage are the systems the managed back office runs on.