The Office 365 Administration got a small update to provide a simpler Setup blade.
Instead of showing up as a main section with 3 administration sub blades (see below),
the new Setup menu is now a single configuration blade showing up all setup tasks and their status which then allows you to navigate through the important sections (Sign-In and Security, Privacy and Compliance, Data Migration…) to ensure you are setting up/have setup your Office 365 tenant
