Fedaration Stack

RGPV: Cloud Computing: Unit 5

CLOUD FEDERATION STACK

 

DEFINITION: (1)

Cloud federation requires one provider to wholesale or rent computing resources to another cloud provider. Those resources become a temporary or permanent extension of the buyer's cloud computing environment, depending on the specific federation agreement between providers. 

Cloud federation offers two substantial benefits to cloud providers.

First, it allows providers to earn revenue from computing resources that would otherwise be idle or underutilized.

Second, cloud federation enables cloud providers to expand their geographic footprints and accommodate sudden spikes in demand without having to build new points-of-presence (POPs).

                                                

Fig. Cloud Federation Stack

 

DEFINITION: (2)

Cloud Federation refers to the unionization of software, infrastructure and platform services from disparate networks that can be accessed by a client via the internet. The federation of cloud resources is facilitated through network gateways that connect public or external clouds, private or internal clouds (owned by a single entity) and/or community clouds (owned by several cooperating entities); creating a hybrid cloud computing environment. It is important to note that federated cloud computing services still rely on the existence of physical data centers

Service providers strive to make all aspects of cloud federation—from cloud provisioning to billing support systems (BSS) and customer support— transparent to customers. When federating cloud services with a partner, cloud providers will also establish extensions of their customer-facing service-level agreements (SLAs) into their partner provider's data centers.  

Microsoft's traditional Active Directory technology stores usernames and passwords and uses them to manage and secure access to computers on a Windows domain. It also provides single sign-on access to corporate applications. AD Federation Services builds upon this functionality to authenticate users on third-party systems, such as another company's extranet or a service hosted by a cloud provider.

Active Directory Federation Services aims to reduce the complexity around password management and guest account provisioning, and it has taken on additional importance as organizations and employees rely more on Software as a Service (SaaS) and Web applications. SaaS and Web apps typically require their own user accounts, and AD Federation Services ties those usernames and passwords to existing identities. Once a user logs in with his or her Windows credentials, AD Federation Services authenticates access to all approved third-party systems.

Cloud Federation refers to the unionization of software, infrastructure and platform services from disparate networks that can be accessed by a client via the internet. The federation of cloud resources is facilitated through network gateways that connect public or external clouds, private or internal clouds (owned by a single entity) and/or community clouds (owned by several cooperating entities); creating a hybrid cloud computing environment. It is important to note that federated cloud computing services still rely on the existence of physical data centers.

 

CLOUD FEDERATION BENEFITS

·         The federation of cloud resources allows clients to optimize enterprise IT service delivery.

 

·         The federation of cloud resources allows a client to choose the best cloud services provider, in terms of flexibility, cost and availability of services, to meet a particular business or technological need within their organization.

 

·         Federation across different cloud resource pools allows applications to run in the most appropriate infrastructure environments.

 

·         The federation of cloud resources also allows an enterprise to distribute workloads around the globe, move data between disparate networks and implement innovative security models for user access to cloud resources.

 

CLOUD FEDERATION IMPLEMENTATION

One weakness that exists in the federation of cloud resources is the difficulty in brokering connectivity between a client and a given external cloud provider, as they each possess their own unique network addressing scheme.

To resolve this issue, cloud providers must grant clients the permission to specify an addressing scheme for each server the cloud provider has extended to the internet.

This provides customers with the ability to access cloud services without the need for reconfiguration when using resources from different service providers.

Cloud federation can also be implemented behind a firewall, providing clients with a menu of cloud services provided by one or more trusted entities.

 

BY:

JYOTSANA SASANE

TSEC BURHANPUR

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