Hi @propolis
You are looking for SSO (single sign-on).
Single sign-on (SSO) is a session and user authentication service that permits a user to use one set of login credentials (e.g., name and password) to access multiple applications. https://searchsecurity.techtarget.com/definition/single-sign-on
Out of the box Laravel does not have this option but there are some packages to archive this. Example: https://github.com/aacotroneo/laravel-saml2