The first time you access your enterprise, you will complete an initial configuration to get GitHub Enterprise ready to use. The initial configuration includes connecting your enterprise with an identity provider (IdP), authenticating with SAML SSO, configuring policies for repositories and organizations in your enterprise, and configuring SMTP for outbound email. For more information, see "Initializing GitHub AE."
Later, you can use the site admin dashboard and enterprise settings to further configure your enterprise, manage users, organizations and repositories, and set policies that reduce risk and increase quality.
All enterprises are configured with subdomain isolation and support for TLS 1.2 and higher for encrypted traffic only.