The matrix diagram shows a fourfold typology of public procurement organised by demand type versus offering type. The horizontal dimension shows standardized offering and specialized offering. The vertical dimension shows dedicated demand and generic demand. Dedicated demand with standardized offering shows adapted procurement with text customized implementation of a known service. Dedicated demand with specialized offering shows experimental procurement with text specialized technical solution. Generic demand with standardized offering shows efficient procurement with text basic products. Generic demand with specialized offering shows technological procurement with text specialized technical equipment.