Today I carried out a small project at my work (daytime job at Mavention). Together with a colleague I created a custom sign-in page for our Office 365 portal. I took some photos with a laptop and some with a colleague in it.
To see the custom sign-in page go to this site and try to login with an user account ending with “@Mavention.nl”. What you put before the @ sign is not important. As soon as you hit enter, you see one of the photos I took.
It will look like this: