What is login flows?

Hi,

Login flows allow admins to build post-authentication processes to match their business practices, associate the flow with a user profile, and send the user through that flow when logging in. Salesforce directs users to the login flow after they authenticate but before they access your org or community. After users complete the login flow, they’re logged in to your Salesforce org or community. The login process can also log out users immediately if necessary.