What was the name of McDonald’s original service system, promoted through its early branding before the modern logo?

McDonald’s original service system was called the Speedee Service System.

Richard and Maurice McDonald developed the system after redesigning their restaurant in San Bernardino, California, in 1948. It emphasized a limited menu, assembly-line preparation, standardized portions, and fast counter service. The system became the operational idea behind the early McDonald’s identity.

The name also explains the company’s first mascot, Speedee. Branding and operations were closely connected: the character communicated speed, while the restaurant system delivered it through repeatable procedures.

The Speedee Service System is sometimes mistaken for a later slogan or logo. It was primarily a restaurant operating model, but it strongly influenced McDonald’s early advertising and visual identity before the Golden Arches became dominant.