Sustainability in purchasing or in tenders holds enormous potential for climate protection. Public clients in particular have a special obligation to do a good job when using 470 billion euros of taxpayers' money from the federal budget. The "Active for Sustainable Public Procurement" initiative aims to leverage this potential and give a boost to the German government's "Procurement Transformation Package 2023".  In principle, sustainable procurement is not a popular topic. It is regarded as cumbersome and complicated The realization that many administrative staff are overwhelmed by tendering procedures...