exchange portal office 365

exchange portal office 365   can integrate Office 365 with your existing directory services and with an on-premises installation of Exchange Server, Skype for Business Server 2015, or SharePoint Server. When you integrate with directory services, you can synchronize and manage user accounts for both environments

• When you integrate with directory services, you can synchronize and manage user accounts for both environments. You can also add password hash synchronization or single sign-on (SSO) so users can log on to both environments with their on-premises credentials.
• When you integrate with on-premises server products, you create a hybrid environment. A hybrid environment can help as you migrate users or information to Office 365, or you can continue to have some users or some information on-premises and some in the cloud. For more information about hybrid environments