The user typically logs in from the login page at http://www.netsuite.com.
There is an exception for the Customer Center. Each NetSuite account has its own private Customer Center login page. We can find the URL for the Customer Center in our database by going to Setup | Company | Company Information:
Customer Center URL
There are also tools we can use to manage login authentication, found in the Managed Authentication section of the Setup | Company | Enable Features | SuiteCloud tab. We can use a Google ID to authenticate users, as well as any SAML-compliant provider, by enabling these options:
Authentication options
