Branding your Office365 Login Screen
Using your organization’s logo and custom color schemes to provide a consistent look-and-feel on your Azure Active Directory (Azure AD) sign-in pages. Your sign-in pages appear when users type in their sign in to your organization’s web-based apps, such as Office 365, which uses Azure AD as your identity provider. [caption id=“attachment_1995” align=“alignnone” width=“665”] My Example[/caption]
Some people maybe notice where this background is from, for the ones that don’t know this is from Mr Robot.