What is Single Sign On?
A central domain performs user authentication and then shares the authenticated session with other domains. This provides a seamless authentication experience for users when using applications and services that share the authenticated session.
SSO reduces burden because users can simply authenticate once and use SSO to access multiple applications. SSO can also improve security as well because it reduces the risk of compromised user credentials for each separate application.
SSO Resources:
Blogs
Federated Identity Management vs. SSO
