Public spending, which accounts for an average of 12% of GDP in OECD countries, and up to 30% in developing countries, wields enormous purchasing power. Shifting that spending towards more sustainable goods and services can help drive markets in the direction of innovation and sustainability, thereby enabling the transition to a green economy. Through Sustainable procurement practices, governments can lead by example and deliver key policy objectives. Sustainable procurement allows governments to mitigate key issues such as greenhouse gas emissions, improve resource efficiency, recycling, among others. The key international organizations already increasingly recognize public procurement as a means of changing the unsustainable patterns of consumption and production.