What was the name of McDonald's 1948 operating model that helped define its fast-food brand?

McDonald’s 1948 operating model was called the Speedee Service System.

Richard and Maurice McDonald developed the system after rethinking their San Bernardino restaurant. They reduced the menu, standardized preparation, and designed the kitchen and service process for speed and consistency.

The approach helped establish ideas that became central to McDonald’s branding: predictable food, quick service, and an experience that could be reproduced at many locations. It also influenced the wider fast-food industry.

Speedee was both a system name and an early McDonald’s character, which can cause confusion. The character appeared as a chef-like figure in early branding, but the Speedee Service System referred specifically to the restaurant’s operating method introduced in 1948.