Metro (design language)

Metro, also known as Modern UI, was a design language developed by Microsoft. Primarily used in its Windows Phone operating system and later in Windows 8 and Windows 8.1, Metro emphasized clean lines, typography, and simplified icons, aiming for a visually engaging and intuitive user experience. The design language focused on content rather than chrome (window dressing), presenting information in a streamlined and easily digestible manner.

A core element of Metro was the use of "tiles," dynamic rectangles that displayed information and provided quick access to applications and features. These tiles were typically colorful and could update with real-time information, such as weather updates or social media notifications. This tile-based system replaced the traditional icon-based desktop interface, promoting a more immersive and informative start screen.

The principles of Metro emphasized clarity, speed, and visual hierarchy. Large, bold fonts were used to highlight important information, while negative space was employed to prevent clutter and improve readability. The design language also embraced horizontal scrolling, allowing users to quickly navigate through content.

While initially well-received for its innovative approach, Metro received mixed feedback when it was implemented in Windows 8, particularly for its departure from the traditional desktop interface. Microsoft subsequently evolved the design language, incorporating elements of Metro into later versions of Windows while also addressing user concerns about usability and familiarity. The core principles of clarity and content-focused design, however, continue to influence Microsoft's design philosophy.