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storage, content control, security, traf
c direction and mobile device content delivery.
The cloud part of the system take advantage of Limelight networks cloud storage
service. Figure
7
presents an overview of the orchestrate service.
5.5 MediaWise Cloud
The MediaWise cloud [
14
,
15
] offers a novel cloud orchestration framework where any
user can become a CDN provider. As in MetaCDN, the MediaWise cloud leverages
multiple cloud providers and offers pay-as-you-go model. The end user can select any
public cloud provider simultaneously (e.g., Amazon and Rackspace) based on SLA,
price and QoS requirements to leverage services such as compute, storage and content
distribution at signi
cantly lower costs. The main highlight of this approach is that a
customer is not locked to any particular cloud and CDN provider. Compared to other
cloud-based CDNs, another major highlight of the MediaWise cloud is that it supports
dynamic content delivery to enable collaborative activities such as collaborative con-
tent creation, indexing, storage and retrieval [
38
].
Figure
8
shows the reference architecture of MediaWise cloud. As can be seen in this
gure, the MediaWise cloud consists of a several components. These include: content
orchestrator, hybrid clouds, content access portal and the content management portal.
Using the content management portal, the users (content producers) can add, delete or
update content on any public clouds (e.g., Amazon and Rackspace). This content is then
available to the end users via the content access portal. As mentioned previously, the
MediaWise Cloud supports dynamic content creation and delivery. Using this func-
tionality, several users using the MediaWise clouds create multimedia content together
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