Technical Articles
SLA@SOI researchers regularly publish insights into their work in blog posts on this website, sometimes accompanied by more in-depth technical papers. All previous articles are listed below. For options on subscribing to future articles see the “Follow Us” tab on the right.
- Tackling Data Security Barriers to Cloud Adoption April 18, 2011
The barriers to cloud adoption are heavily documented across the internet. In this blog post, we examine some of the main solutions put forward by the SLA@SOI consortium in addressing the issue of data security...
- SLA-enabled Infrastructure Scheduling April 4, 2011
SLA@SOI has developed a scheduler to help better deliver an SLA-enabled infrastructure. It allocates requested virtual machines to the most appropriate physical machines taking SLA specifications and data center policies into account. Read on to find out more...
- Applying SLA@SOI Management in the Future Internet February 8, 2011
The Future Internet constitutes the next major paradigm to support integration, interrelation and inter-working across the Internet of Services, the Internet of Things and the underlying technology cloud platform. Service Level Agreements (SLAs) are of crucial importance for securing the success of the Future Internet so that services in there become dependable and tradeable.
- SLA@SOI Reference Architecture published January 10, 2011
The SLA@SOI reference architecture for an integrated SLA management framework has been published in the Journal of Internet Engineering. The full article "A Reference Architecture for Multi-Level SLA Management" can be downloaded here.
- Hot off the press... August 17, 2010
Check out the latest issue of the Projects Journal for an article dedicated to the challenges that SLA@SOI is tackling, providing new service opportunities for consumers and providers alike. The article has been featured stand-alone and is also availab...
- Using Cloud Standards for Interoperability of Cloud Frameworks April 6, 2010
SLA@SOI and RESERVOIR have been actively collaborating together with the aim of investigating and pursuing the integration of their respective technologies as part of the NEXOF Reference Architecture initiative. One of the outputs of this work has be...
- Design-Time Prediction of QoS Properties February 16, 2010
As part of a Service Level Agreement (SLA), a service provider and its customer agree on non-functional or Quality of Service (QoS) requirements, which may be part of the pricing model. Predicting service quality attributes before service run-time help...
- Dynamic set-up of Monitoring Infrastructures for SLA Management January 18, 2010
Over the last few years, several approaches have been developed to support the monitoring of SLAs. Typically, these approaches collect events during service executions and use them to check whether the properties of service provision as specified in an...
- Business Fundamentals of SLAs December 21, 2009
In recent years, significant advances have been made in SLA management. This progress has largely focused on the building pieces necessary to create the communications, interactions and corresponding flows required for SLA management. However, to be tr...
- Challenges in SLA Translation December 1, 2009
Service-Oriented Architecture (SOA) represents an architectural shift for building business applications based on loosely coupled services. In a multi-layered SOA environment the exact conditions under which services are to be delivered can be formally...
- SLA Focused Financial Grids August 28, 2009
The financial sector depends heavily on process and data intensive computations to deliver competitive advantage. Financial applications are particularly suited to grid-based experimentation and research. A Financial Live Trading System is used an exem...
- Complex Service Management August 12, 2009
Originally, (Web) services were deployed and used with almost no actual control by the different parties. The simplistic assumption that their behavior was correct and everyone had to be happy with the functionality provided was unrealistic. The actual exploitation of services, imposed us to start conceiving different methods and tools to manage the complete life-cycle of deployed and running services with special emphasis on the actual run-time behavior.
- Hierarchical Monitoring Services for Efficient Distributed System Management July 10, 2009
An essential part of an SLA-aware infrastructure is a scalable and self-sufficient monitoring system capable of monitoring large distributed systems, in real-time. The monitoring system must support two mutually exclusive perspectives arising from the ...
- So What's in OVF? April 21, 2009
The Open Virtualisation Format (OVF) is a schema for describing a virtual machine or a collection of virtual machines. The initiative is the results of efforts by the Distributed Management Task Force (DMTF) who, amongst other standards, are responsible for the Common Information Model (CIM).
- What’s in a Service Level Agreement? March 17, 2009
Our project is about managing Service Level Agreements, so in this post it is a good opportunity to discuss them in general and see some aspects of their management.
- Messaging and Infrastructure Management February 6, 2009
SLA@SOI is dedicated towards building an SLA-aware service oriented infrastructure. A key component of this will be the layer managing the infrastructure, and we are envisioning that this must be able to handle internet-scale deployments. Management of an environment with hundreds of thousands of nodes places significant demands on communication channels, and SLA@SOI is currently investigating how protocols like XMPP might help address these needs.
