This is all well and good but doesn't help when I'm working with multiple clients. For example, I'm an AWS DevOps guy and am generally logged into AWS under 3

This is all well and good but doesn't help when I'm working with multiple clients. For example, I'm an AWS DevOps guy and am generally logged into AWS under 3 different accounts at any one time. Can you do something like that with Safari? Chrome has "Accounts" and Firefox is experimenting with "Collections" but I don't know how to do it with Safari.