8 papers
A Penalty-Aware, Blockchain-based Cloud Monitoring System
Christian Dienbauer, Benedikt Pittl, Erich Schikuta
Today, traded cloud services are governed by service-level agreements that specify providers' obligations, such as availability and reliability. Violations of service-level agreeme…
Simulating Dynamic Cloud Marketspaces: Modeling Spot Instance Behavior and Scheduling with CloudSim Plus
Christoph Goldgruber, Benedikt Pittl, Erich Schikuta
The increasing reliance on dynamic pricing models, such as spot instances, in public cloud environments presents new challenges for workload scheduling and reliability. While these…
A Novel IaaS Tax Model as Leverage Towards Green Cloud Computing
Benedikt Pittl, Werner Mach, Erich Schikuta
The cloud computing technology uses datacenters, which require energy. Recent trends show that the required energy for these datacenters will rise over time, or at least remain con…
The Cost Advantage of Virtual Machine Migrations: Empirical Insights into Amazon's EC2 Marketspace
Benedikt Pittl, Werner Mach, Erich Schikuta
In recent years, cloud providers have introduced novel approaches for trading virtual machines. For example, Virtustream introduced so-called muVMs to charge cloud computing resour…
A Survey on Bilateral Multi-Round Cloud-SLA Negotiation Strategies
Benedikt Pittl, Werner Mach, Erich Schikuta
Today, static cloud markets where consumers purchase services directly from providers are dominating. Thus, consumers neither negotiate the price nor the characteristics of the ser…
A Cloud Resources Portfolio Optimization Business Model -- From Theory to Practice
Valentin Haag, Maximilian Kiessler, Benedikt Pittl +1
Cloud resources have become increasingly important, with many businesses using cloud solutions to supplement or outright replace their existing IT infrastructure. However, as there…
Optimization Heuristics for Cost-Efficient Long-Term Cloud Portfolio Allocations Under Uncertainty
Maximilian Kiessler, Valentin Haag, Benedikt Pittl +1
Today's cloud infrastructure landscape offers a broad range of services to build and operate software applications. The myriad of options, however, has also brought along a new lay…
A Prediction Model for the Probability of SLA Matching in Consumer Provider Contracting of Web Services
Werner Mach, Benedikt Pittl, Erich Schikuta
Future e-business models will rely on electronic contracts which are agreed dynamically and adaptively by web services. Thus, the automatic negotiation of Service Level Agreements…