Nowadays, a very useful platform is becoming widely used to deploy new services and
applications in the Internet: the overlay networks. These networks create a virtual topology …

Overlay networks create virtual topologies on top of the existing networking infrastructure
and come as a middle layer between end-user applications and the basic network services …

Recently, a moderate amount of work has been reported on the use of overlay networks to
support value-added network services, such as multicasting, Quality-of-Service (QoS) …

Recently, overlay networks have emerged as a means to enhance end-to-end application
performance and availability. Overlay networks attempt to leverage the inherent redundancy …

The peer-to-peer paradigm has emerged as a viable way to overcome the limitations of the
client-server model namely, in terms of scalability, fault-tolerance, and even operational …

This article presents a survey of recent advancements in application-layer overlay networks.
Some of the most important applications that have been proposed for overlays include …

An overlay network is a logical abstraction of the underlying physical network, comprising
end nodes and paths between end-node pairs. Many applications, such as multicast and …

Internet-based overlay networks are likely to demonstrate poor performance when deployed
on the Internet without consideration of topological and link properties. We introduce a new …

Overlay networks are becoming widely used for content delivery because they provide
effective and reliable services that are not otherwise available. However, they can negatively …

As the role of the Internet has been steadily gaining in importance, overlays are increasingly
being used to provide new services and to deploy older ones. Some of the services for …