The Start interface in Windows 11 is a centered floating window that can be accessed by clicking the Start button or using keyboard shortcuts like WINKEY or Ctrl + Esc. Key features include a Search box for initiating searches, a customizable Pinned section for frequently used apps, a Recommended area for recently accessed items, and an All section displaying all installed apps. Users can manage their account through the Account manager, access power options for Lock, Sleep, Shutdown, and Restart, and connect mobile devices via the Phone Link app.
Customization options for the Start interface include moving the Start and Taskbar icons to the left, configuring Windows Search settings, and customizing the Pinned and Recommended sections. Users can pin, unpin, and rearrange app shortcuts in the Pinned section, adjust what appears in the Recommended section, and choose between different layout views in the All section. The Account manager allows limited customization of notifications, and users can add folders and mobile device slices to Start. The Quick link menu provides access to legacy management interfaces and can be accessed by right-clicking the Start button or using WINKEY + X.