This allows customized flows based on username/email. From what I've seen, there are mostly two use cases 1. different flows based on organization e.g. Microsof

This allows customized flows based on username/email. From what I've seen, there are mostly two use cases 1. different flows based on organization e.g. Microsoft Office 365 2. different flows based on guest vs user so the website can capture the emails if it's not a registered user e.g. tumblr