Modern society relies heavily on the use of computational resources. Over the last decades, the number of connected users and deviees has dramatically increased, leading to the consideration of decentralized on-demand computing as a utility, commonly named "The Cloud". Numerous fields of application such as High Performance Computing (HPC). medical research, movie rendering , industrial facto ry processes or smart city management , benefit from recent advances of on-demand computation .The maturity of Cloud technologies led to a democratization and to an explosion of connected services for companies, researchers, techies and even mere mortals, using those resources in a pay-per-use fashion.ln particular, since the Cloud Computing paradigm h...