Cloud Computing: Towards Making Computing a Utility.- Semantic Engine and Cloud Agency for Vendor Agnostic Retrieval, Discovery, and Brokering of Cloud Services.- A Concurrency Mitigation Proposal for Sharing Environments: An Affinity Approach Based on Applications Classes.- On Cloud Spot Market: An Overview of the Research.- Analysis and Optimization on FlexDPDP: A Practical Solution for Dynamic Provable Data Possession.- Leveraging Ad-hoc Networking and Mobile Cloud Computing to Exploit Short-Lived Relationships Among Users on the Move.- Energy Consumption Analysis of HPC Applications Using NoSQL Database Feature of Energy Analyzer.- A Low-Overhead Secure Communication Framework for an Inter-cloud Environment.- Analysing Virtual Machine Security in Cloud Systems.- Cloud Computing: Security Issues Overview and Solving Techniques Investigation.