Frequently juggling username and passwords is one of the major issues that users are facing today. When users are working with different applications and platforms, they have to login to each web services and platform. For that, they need to create separate username and passwords. Creating a new username and password not only wastes their precious time but also forces them to remember new login credentials. And we all are well aware that remembering passwords is not an easy task. Because we all have already dozens of passwords to remember.

But implementing Single Sign On technology is the best solution to avoid such situation. It is a technique of alleviating passwords. With SSO users can login dozens of websites and web applications by using single ID credential. Only by entering a single username and password, users get the right to access multiple websites but of the same organization. It is a key for multiple web login.

It is continuously evolving to solve the problems faced by the users and information technology workers. The main benefit of having SSO is that users don't have to spend their time on authentication.According to the demand and need, the SSO technique is further classified into mainly five categories. These are web sso, enterprise sso, openID, federated sso and kerberos. One has to be very careful while choosing single sign-on technology for the business websites.

SSO is very advantageous for both users and businesses because of its simplicity. Additionally from security point also, it is very advantageous. Since the technology is based on SAML(Security Assertion Markup Language), it is highly secure and reliable way of user authentication. In this way, Single Sign On improves the data security of an organization. It centralizes the whole data that facilitates organization to apply security policies uniformly. Decentralized data is more difficult to handle and monitor than a centralized one. It provides a unified view of customer and single customer view is very important from the business point of view.