For every authorized application, a set of login credentials (username and password) are needed. It’s hard to keep different credentials for different applications. For faster access to multiple applications, users can use a single set of credentials. How is it possible? It can be achieved using Single sign-on (SSO). Single sign-on is a part of user authentication. Using SSO a user can easily be logged into multiple applications with a single set of credentials. Let’s focus on how we can implement SSO in Laravel. It’s quite easy to implement SSO in Laravel.