With the login page, when we put our userid and password and click the submit button, then the combination of that entered
userid and password is sent to the server and then server checks if that combination is existing with the server or not. This process
is called the authentication.
After the authentication is completed, if the server found the userid and password combination is true, the server redirect the user
to his/her allocated page. For example: if the user is an ordinary user, then the user is sent to the user dashboard and if the user is the admin, then he/she is sent to the admin panel. This process is called the authorization.