It might take Alice 10 hours to do the sysadmin, 5 for the database, and 15 for the devops. Bob however can do the devops in 2 hours, sysadmin in 3 hours and da

It might take Alice 10 hours to do the sysadmin, 5 for the database, and 15 for the devops. Bob however can do the devops in 2 hours, sysadmin in 3 hours and database in 4 hours. Bob is of course more productive, but if you let Alice do all the DBA, then Bob will be even more productive, and the total output of your team will increase.