With Office 365, Microsoft offers a single account sign-on experience, or single sign-on. Microsoft leverages Active Directory Federation Service 2.0 (ADFS) to provide this single sign-on experience. ADFS enables organizations to connect their existing Active Directory (AD) forest to Microsoft's federation infrastructure, creating a secure trust relationship with Microsoft. Once your organization is connected to this service, you can then allow your users to log on to the Office 365 services you provide, with their Active Directory credentials. There are many benefits for organizations providing this type of access. These benefits include:
A simplified logon experience
Less confusion versus maintaining multiple accounts/passwords
Business control to quickly disable access to AD accounts when an employee leaves the organization
AD policy adherence defined by the business (for example, password complexities, password attempt limits, and so on)
Internal...