Summary and recommendations of the help information 

The following section provides you with several capabilities and summarizes the most important corporate identity features to customize your environment:

• Banner logo: Choose between the following options:
  • Displayed on the Azure AD sign-in page and myapps.microsoft.com
  • PNG or JPEG
  • Can't be taller than 36 pixels or more extensive than 245 pixels
  • Recommendation—no padding around the image    
• Sign-in page text body: Choose between the following options:
  • Appears at the bottom of the Azure AD sign-in page
  • Unicode text only with a maximum length of 256 characters
  • Use to communicate the phone number to your help desk or include a legal statement
  • Recommendation—don't add links or HTML tags
• Sign-in page background image: Choose from the following options:
  • Displayed on the side of the Azure AD sign-in page
  • PNG or JPEG
  • Recommended 1420 x 1200 with a supported file size of 300 KB (max. 500 KB)
  • Keep the exciting part in the top-left corner (image gets resized and cropped)
• Username hint: Hint text that appears to users if they forget their username:
  • Unicode, without links or code
  • Maximum 64 characters

• Show option to remain signed in: Let your users remain signed in to Azure AD until explicitly signing out:

Your expected result should be this:

Now that we have provided an essential company branding, we can start to create and manage users and groups.