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.
Some people maybe notice where this background is from, for the ones that don’t know this is from Mr Robot.
Customize your branding
Sign in to the Azure portal using a Global administrator account for the directory.
Select Azure Active Directory, and then select Company branding, and then select Configure.
On the Configure company branding page, provide any or all of the following information.
Sign-in page background 1920x1080px, less than 300kb in JPG or PNG format.
Banner Logo, 280x60px 10kb in JPG or PNG format.
sign-in page text
Sign-in page background color
Square logo, 240×240, 10KB max PNG or JPG format.
Square logo dark theme, 240×240, 10KB max PNG or JPG format.
For many years PowerShell was a Windows-only thing that was part of the closed Windows ecosystem. Now a days PowerShell is open source up at https://github.com/PowerShell with lots of docs and scripts, also open source.
PowerShell is supported on Windows, Mac, and a half-dozen Linux distros.
While running PowerShell on your RaspberryPi is still experimental and only supported for Raspbian Stretch it’s running pretty smoothly.