Fluent 2 is a Design System created by Microsoft for designing internal products. A wide library of guidelines, examples, and recommendations based on deep expertise in product design helps designers and developers collaborate more effectively, and it functions seamlessly across various Apps and devices.

Design System includes design principles and guidelines and components for Web React, iOS, Windows, and Android. UI kits encompass design assets perfectly aligned with the code libraries, ensuring a smooth transition from design to development consistently.