Cloud computing is positioning itself as an emerging platform for delivering information infrastructures and resources as IT services. Customers (enterprises or individuals) can provision and deploy Cloud services via pay-as-you-go pricing models saving huge capital investments in their own IT infrastructures. The paradigm has attracted international interest with many open challenges such as security and privacy. Green computing, in general, aims to enable computing and IT infrastructures to be energy efficient and environmentally friendly. With dramatically increasing demand on computing and storage systems, IT infrastructures have been scaled tremendously which results in huge energy consumptions, heat dissemination, greenhouse emissions and potentially also climate change. As such, green computing challenges the community for energy efficient and environmentally friendly solutions for modern computing infrastructures. These two domains meet at the challenge of making modern (Cloud) computing infrastructures environmentally friendly, sustainable and efficient with respect to their energy consumption. CGC (Cloud and Green Computing) was created to provide a prime international forum for researchers, industry practitioners and domain experts to exchange the latest advances in Cloud and Green computing as well as their synergy.