Moving to the cloud for some of the services you provide today is a major shift in how you manage both your infrastructure and your users. The key item to focus on when moving to the cloud is what type of experience you choose to provide for your users, whether it's migrating from Exchange and preventing a new download of cached mail or seamlessly authenticating from SharePoint Online while navigating to SharePoint on-premises. To provide this experience, you need to enable some of the core integration options provided by Microsoft Online. Topics covered in this chapter include:
Directory Synchronization
Active Directory Federation Services (AD FS)
Exchange Hybrid
Non-Exchange messaging systems