Hybrid Cloud is a solution that many companies resort to. To Enable the hybrid scenario, companies connect their data center to the cloud service provider data center. For the most part, companies like to implement the authentication and authorization using on premise solutions of single sign on (SSO). Research the (SSO) concept and some of its implementation to address the following: Why companies decide to use the SSO? Why dont they use the login from the cloud provider? What is required from the Vendor Side to enable the SSO? What is required from the company side to enable the SSO? What is required from the company network to enable the user who is using a cloud application to access data from database on-premises. If you have remote employees for the company who use VPN? How does that affect the access to the applications?.