The hybrid cloud has been heralded as a promising IT operational model enabling enterprises to maintain security and control over the infrastructure on which their applications run. With Public Cloud growing at a 23% compound annual growth rate through 2018 and 87% of organizations already using public cloud, its time we investigate the Hybrid Cloud and learn how we can utilize it effectively. What connection between “on-premise” IT and the infrastructure of public Cloud ?
By Software interaction : create wrappers (web-services) to establish communications between different software blocks.
By integration and securing network : the different infrastructures are considered as an unique set from the network point of view.
This service needs an advanced router, compliant with IKE  (Internet Key Exchange) protocol to exchange security attributes in relation with the VPN setup, or BPG (Border Gateway Protocol) Peering to define network routes between Amazon data center and your infrastructure.
The main advantage of IPSec tunnels’ usage is beyond the transparency provided to applications,on Amazon side, VMs are not accessible from public Internet, but only by the VPN entry point. Some AWS like auto-scaling or Elastic Load Balancing are not compatible with VMs running inside a VPC. The second method is to introduce a light coupling between the image of a VM and its final state. To finish, the last solution is to create AMIs containing only OS and the mandatory environment to run an automatized configuration tool like Chef, Puppet, CFEngine. Many editors have agreements with Amazon allowing the final user to perform a smooth transition towards execution on EC2 instances. However, each platform has its specificities, its own services, its proprietary APIs and the possible answers presented in this article, based on AWS could not apply to other IaaS offers and reciprocally. Even though some initiatives of partnerships (between VMWare and Google for example) favor the development of standards, Cloud market is far from offering common services and APIs. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Clipping is a handy way to collect and organize the most important slides from a presentation. TweetVMware has introduced vCloud Hybrid Service, a cloud infrastructure as a service that provides customers with a common platform to extend their datacenter to the cloud.
The hybrid vCloud Service should enable VMware customers the ability to easily expand their in-house IT in the public cloud.
Hybrid vCloud Service will allow cloud users to extend the same skills, tools and models for networking and security environments through on-premise and off-premise. The company kept the pricing competitive to engage with established names like Amazon, HP and Microsoft.
As like Amazon and other IaaS providers, the public cloud from VMware will offer essentially access to computing resources hosted on virtual data centers in four regions of the United States, Asia and EMEA.
In 2012, more than 1.7 million jobs in the field of cloud computing remained unoccupied, according to analysts firm IDC.

Cloud marketing has the ability to drastically change the ways in which they reach and engage their audience, particularly with regard to distributing and storing mission-critical data. More and more companies encourage their employees to work on their devices, thus reducing the cost of computer equipment, but also increase the cost to maintain licenses and safety.
Despite the inclination to wait until all of the cloud’s kinks have been worked out, holding off on cloud initiatives until the industry matures won’t guarantee success. The software industry is undergoing major changes by trends such as cloud, SaaS, mobile technology and the “consumerization of IT”. Cloud solutions suit clients that want to keep to keep their initial capital expenditure as low as possible, favouring variable expenses over traditional capital expenses.
This paying-as-you go model offers unlimited scalability and flexibility and provides a simple way to access servers, storage, databases and a broad set of application services over the Internet. Some major advantages of cloud solutions are that new IT resources are only ever a click away, which means a significant reduction in time it takes to make those resources available.
The ability to regionalise servers and data quickly mean that resources can be made available with little latency to various offices located in different regions. PCSOS also offers hybrid solutions in which PCSOS pairs a mix of traditional infrastructure backed by the scalability and reliability of the cloud together as a complete turnkey solution. PCSOS understands that some functions have to be kept in-house for data compliance and confidentiality requirements whilst other functions are kept in the cloud. At the same time, it promises to maximize ROI from their local data center and leverage public cloud infrastructure for an occasional demand spike. These web services could be secured by SSL to ensure  confidentiality of exchanged data between the internal IT and public VMs. About the drawbacks, the setup of a VPN can imply important modifications of the network architecture (rules of filtering, sub-networks, distribution of bandwidth …). This will lead you to deploy machines configured by yourself to accomplish these functionnalities.
So, the question is if a company must manage an hundred or more of VMs, how must it manage the AMIs at the origin of the VMs ? During the launch of the VM, a parameter will indicate which configuration should be used (list of required frameworks, the applicative code, …) and the VM will configure itself using scripts provided by the configuration tool.
Amazon introduces editors whose SaaS offers are hosted on AWS and provide migration kits to facilitate the transition to this model. Thus the multiplicity of used offers leads to increase the need of internal skills and an relative adhesion to the cloud  providers. The Hybrid service is operated and supported by VMware and built on our vSphere and vCloud platforms. The cloud offering support thousands of applications, and more than 90 certified for vSphere operating systems so that applications do not need to be adjusted. The new service provides a public cloud fully interoperable with existing VMware virtualized infrastructure.

Their Hybrid vCloud Service capacity receives two variants: VCloud dedicated Hybrid Cloud provides physically isolated and reserved computing resources and is offered in accordance with VMware at an annual term from 13 cents per hour for a 1GB virtual machine with 1 processor.
The company wants to virtualize the entire infrastructure from the server to the storage through the network. Cloud Computing providers such as Amazon Web Services own and maintain the network-connected hardware required for these application services while PCSOS provides the managed support and architecture design and setup. As capacity demands vary, infrastructure instances can be scaled up or down as necessary which eliminates guessing about your future infrastructure capacity needs.
PCSOS partnering with Amazon can quickly deploy regional resources from Amazons Web Services (AWS) in various regions around the world including Asia Pacific. With this configuration, we avoid to bundle a new AMI to integrate new release of applicative binaries. The license you have used since 1 year, still usefull for the next 2 years will be available for certain AMIs on EC2.
Ideally, we will limit the number of CLoud actors, prefering partners apt to answer the forthcoming needs, in terms of services and guarantees.
Users can use virtual networks to securely extend the Layer 2 or Layer 3 networks of their data centers to the cloud. Hybrid vCloud Service Virtual Private Cloud is calculated based on a monthly period from 4.5 cents per hour for a 1GB virtual machine with 1 processor. In this context, VMware has recently invested $30 million on Puppet Labs, a cloud automation tools open-source vendor to create application and infrastructure elements for Amazon Web Services, OpenStack, physical infrastructures, and VMware-based public and private clouds.
You can access as much or as little as you need, and scale up and down as required with only a few minutes notice.
According to Amazon, this functionality requires 7 % of additional use of network bandwidth due to encryption and encapsulation.
As the company will adopt the Amazon cloud, the number of AMIs it will have to manage will increase.
For JAVA applications, this mechanism can simply be a Maven Command executed at startup to retrieve artifacts from a repository inside the company.
The hybrid vCloud Service offers to vSphere-based functions such as automated replication, monitoring and high availability for mission-critical applications. Problems will occur during updates : if you must apply a patch on an OS used by 30 AMIs, 30 AMIs should be created again once the update is done.
And finally, users can use the same management tools and processes as their on-premise infrastructure for the cloud service. In addition, cloud providers have the opportunity to integrate the VMware service into their portfolio.

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