Since man first became aware of his negative impact on the environment, a number of studies and expert conferences have been held in search of solutions. One of the most famous is the 1987 Brundtland Report, which for the first time evoked the notion of sustainable development. Sustainable development is development that meets the needs of the present without compromising the ability of future generations to meet their own needs. Sustainable development takes into account three (3) considerations: economic, social and environmental. When applied to companies, it is referred to as CSR.Incentives and recommendations have emerged, They require states to take sustainable development considerations into account in their policies, particularly in public procurement, to understand this we need to refer to the 2014 "market" directives. This makes public procurement sustainable, green and even responsible.Today, other voices are calling for public procurement to be more virtuous, by taking into account companies' CSR policies.