Paying attention to sustainability and the environmental impact of products and processes is a normal and expected part of all activities. We have seen national and international commitments around this, for example, the EC and many national governments are making commitments to be 'NetZero’ by 2050 and in many cases before then. Information and Communications Technology (ICT) is an area which currently has one of the largest impacts and even now produces more CO2 than the airline industry, one of the traditional high-profile emitters. This is not entirely unexpected with the pervasive nature of ICT in all parts of our professional and personal lives. As such, though, it is also an area where increases in efficiency or changes in practice could have a great impact by understanding all facets of the problem. This is especially true in the context of the new computing continuum, encompassing as it does the full range of devices and services from the personal and IoT, through the edge and into the cloud, as well as all of the networking systems between them. This is a significant challenge, as making these complex systems requires agreement among different actors who only have the visibility and possibility to operate on parts of the overall system. For this reason, specific attention is required of the research community to find methodologies, methods, and tools to achieve real sustainability of software. This workshop will focus on all issues concerning the engineering practices relevant to the creation and execution of green and sustainable software in the cloud continuum.