Internet Interconnection Techno-economics: A Proposal for Assured Quality Services and Business Models

The Internet is constructed by means of complex business interconnection agreements among multiple networks. However, the most commonly used agreements do not contain explicit Quality of Service reference. In this study a business rationale for Assured Service Quality (ASQ) inter-network services is presented and potential business models for their realization are proposed and analyzed. It is argued that ASQ products and business models could greatly enhance the health of the Internet interconnection ecosystem. A business model design framework that encompasses the key strategic decisions that would enable ASQ provisioning and generic collaboration is also provided. This framework is then elaborated using a number of off-net content delivery scenarios. Conclusions are hence drawn on the role of ASQ and ASQ-driven business models for the sustainable development of the "Future Internet"

Energy efficiency embedded service lifecycle: Towards an energy efficient cloud computing architecture

The paper argues the need to provide novel methods and tools to support software developers aiming to optimise energy efficiency and minimise the carbon footprint resulting from designing, developing, deploying and running software in Clouds, while maintaining other quality aspects of software to adequate and agreed levels. A cloud architecture to support energy efficiency at service construction, deployment, and operation is discussed, as well as its implementation and evaluation plans.Postprint (published version

Energy-aware cost prediction and pricing of virtual machines in cloud computing environments

With the increasing cost of electricity, Cloud providers consider energy consumption as one of the major cost factors to be maintained within their infrastructure. Consequently, various proactive and reactive management mechanisms are used to efficiently manage the cloud resources and reduce the energy consumption and cost. These mechanisms support energy-awareness at the level of Physical Machines (PM) as well as Virtual Machines (VM) to make corrective decisions. This paper introduces a novel Cloud system architecture that facilitates an energy aware and efficient cloud operation methodology and presents a cost prediction framework to estimate the total cost of VMs based on their resource usage and power consumption. The evaluation on a Cloud testbed show that the proposed energy-aware cost prediction framework is capable of predicting the workload, power consumption and estimating total cost of the VMs with good prediction accuracy for various Cloud application workload patterns. Furthermore, a set of energy-based pricing schemes are defined, intending to provide the necessary incentives to create an energy-efficient and economically sustainable ecosystem. Further evaluation results show that the adoption of energy-based pricing by cloud and application providers creates additional economic value to both under different market conditions

Collaboration between ISPs for Efficient Overlay Traffic Management

Part 3: Resource AllocationInternational audienceAs peer-to-peer (P2P) applications (e.g. BitTorrent) impose high costs to Internet Service Providers (ISPs) due to the large volumes of inter-domain traffic generated, extensive research work has been done concerning locality-awareness approaches. Although such approaches are based on properties of the physical network topology, they take very little consideration of the real business relationships between ISPs (peering and transit agreements) as well as of the heterogeneous peer distributions among ISPs. In this paper, we propose an innovative way to exploit the business relationships between ISPs of either the same or different Tiers, by introducing new collaborative approaches for overlay traffic management on top of the locality-awareness ones. By means of simulations, we show that win-win situation (reduced transit traffic for ISPs and better performance for users) can mostly be achieved under certain complicated collaborative approaches. Also we show how the collaboration between the upper Tier ISPs can affect favorably both the inter-domain traffic in the transit links, where charging applies, and the performance of their customers ISPs and how the latter can benefit from their collaboration with the transit ISPs

Inter-domain Coordination Models

Part 2: Economics and Technologies for Inter-Carrier ServicesInternational audienceIn order for the Network Service Providers (NSPs) to provide end-to-end Quality of Service (QoS) at the inter-domain level different coordination models have been proposed by ETICS project. In this work we present and analyse the plausible alternatives of those models and we compare them with each other in terms of information asymmetry issues. We show that different information sets affect the total service provision and we present a basic model analysis on information issues by means of game-theoretic models

Σχολή Μαρμαροτεχνίας και συναφείς χώροι στον Πύργο της Τήνου

Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Αρχιτεκτόνων Μηχανικών. Τομέας Ι Αρχιτεκτονικού Σχεδισμού. Διπλωματική Εργασία

ASCETiC: adapting service lifeCycle towards efficienT clouds

Reducing energy consumption is increasingly gaining attention in the area of Cloud computing, as means to reduce costs and improve corporate sustainability image. ASCETiC is focused on providing novel methods and tools to support software developers to optimise energy efficiency and minimise the carbon footprint resulting from developing, deploying and running software in Clouds. At the same time, quality of service, experience and perception are still taken into account, so energy efficiency will complement them and boost Cloud efficiency at several dimensions. ASCETiC primary focus is to relate software design and energy use, which will depend on the deployment conditions and the correct operation of the software by means of an adaptive environment. This paper presents specific objectives for the project, as well as requirements, business goals and architecture for the resultant Open Source Cloud stack providing energy efficiency at software, platform and infrastructure Cloud layers.Peer ReviewedPostprint (published version

ASCETiC: adapting service lifeCycle towards efficienT clouds

Reducing energy consumption is increasingly gaining attention in the area of Cloud computing, as means to reduce costs and improve corporate sustainability image. ASCETiC is focused on providing novel methods and tools to support software developers to optimise energy efficiency and minimise the carbon footprint resulting from developing, deploying and running software in Clouds. At the same time, quality of service, experience and perception are still taken into account, so energy efficiency will complement them and boost Cloud efficiency at several dimensions. ASCETiC primary focus is to relate software design and energy use, which will depend on the deployment conditions and the correct operation of the software by means of an adaptive environment. This paper presents specific objectives for the project, as well as requirements, business goals and architecture for the resultant Open Source Cloud stack providing energy efficiency at software, platform and infrastructure Cloud layers.Peer Reviewe

Energy efficiency embedded service lifecycle: Towards an energy efficient cloud computing architecture

The paper argues the need to provide novel methods and tools to support software developers aiming to optimise energy efficiency and minimise the carbon footprint resulting from designing, developing, deploying and running software in Clouds, while maintaining other quality aspects of software to adequate and agreed levels. A cloud architecture to support energy efficiency at service construction, deployment, and operation is discussed, as well as its implementation and evaluation plans