The aim of the project is firstly to make the students even more aware of the social importance of striving for more sustainability. Based on this, they should then recognise what effects this striving for more sustainability has on consumer behaviour and also on the development of company concepts and the offer of services and products. The students should investigate real companies from the sustainability sector by means of company analyses and company visits and discuss and compare their findings with their partner classes. This will then be the basis for developing their own business concepts in the field of sustainable business. At this point, the students will work in mixed European teams and coordinate their work processes with each other in the eTwinning forum and jointly develop a company concept in shared documents and create a marketing video for the company.