What architecture is functional it is not required to have unity?

In architecture, functionalism emphasizes the idea that the design and structure of a building should primarily serve its intended purpose rather than adhere to a specific aesthetic or style. This approach allows for diverse forms and materials, prioritizing practicality and efficiency over unity in design. As a result, functionalist architecture can often feature varied styles and elements that cater specifically to the needs of its users, rather than conforming to a cohesive visual identity.