What name did McDonald's use for its fast-service operating system introduced by the McDonald brothers?

McDonald's used the name Speedee Service System for the fast-service operating system introduced by the McDonald brothers.

Richard and Maurice McDonald redesigned their San Bernardino restaurant around speed, limited choices, standardized preparation, and efficient counter service. They introduced the system in 1948 after changing their business model from a drive-in restaurant with carhops to a streamlined self-service operation.

The name connected the operating method with Speedee, the early chef mascot. This made the system both a practical restaurant concept and a piece of early brand identity. Standardization later became central to McDonald's expansion because customers could expect similar food and service at different locations.

The Speedee Service System is sometimes mistaken for a slogan or a later advertising campaign. It was instead an operating model: a way of organizing production and service. Its principles helped establish the format that Ray Kroc later franchised and expanded.