This report addresses the design of the Do-It-Together (DIT) approach performed within task 2.2 activities including the State-of-the-art on the Do-It-Yourself (DIY) and on the Do-It-Together (DIT) concepts, and specify the DIT approach vision. This report is divided in two parts. The first part is theoretical and focuses on the definition, the state of the art and the description of the different concepts: •§2 - Overview of Do-It-Yourself •§3 - From Do-It-Yourself to Do-It-Together •§4 - Conceptual foundations of the DIT within the circular economy The second part is more operational, it describes the processes of the DIT approach and the requirements of the INEDIT DIT platform •§6 - Do-It-Together approach vision within INEDIT project (Detail in appendix 1 & 2) •§5 - Description of the INEDIT platform •§6 - Requirements of the DIT platform