What is Cloud Computing?
Cloud computing is a general term for any virtualized infrastructure, which includes the hardware, software, connectivity, and even storage of such virtual servers. In simple terms cloud computing refers to the use of virtualization technologies for achieving centralized, pooled, scalable and secure service.
Virtualization is the underlying technology that powers cloud computing. This software separates cloud computing environments from physical infrastructures so that you can run multiple applications and programs simultaneously even on the same physical machine.
With cloud services, you get to save a lot of money, time, and resources that would have been required for establishing and maintaining the physical infrastructure. However, with the growing popularity of cloud services, along with the need to find effective cloud computing jobs, security issues have also increased.
Security is a major concern for cloud computing users, just as it is for most IT professionals. However, in traditional cloud computing the physical hardware, especially servers, is not secured.
Instead, cloud computing services rely on highly privileged servers hosted by cloud computing providers, and the data resides on an offsite storage space provided by the cloud computing provider.
The provider of cloud computing services typically keeps all the necessary security measures, including the firewall, hardware locking, etc., to secure the cloud data and the service provider.
With this approach, the cloud computing providers bear virtually no cost of maintaining the security of the cloud computing data and services.
But there is a way to make this arrangement more secure. In recent times, cloud services are employing virtualization technology for securing servers.
Virtualization enables many servers to act like one big server. One important aspect of virtualization is decoupling virtual servers from their physical hardware components.
Therefore, while individual servers are running, each virtualized server has the complete hardware capability of that particular component.
Nowadays, many cloud computing service vendors offer virtualization as a service with its many server components. Vendors like Citrix, Microsoft, Google, Hewlett-Packard, and IBM are leading the cloud computing market. Some vendors, like EMC and Microsoft, are providing cloud computing solutions directly to the end-users. The major advantage of cloud computing is that the administrators do not need to have an extensive technical background in computer software. Many cloud vendors provide IT professionals the option of self-service provisioning of virtual machines (VMs) to run various operating systems like Windows, Linux, and others.
Another important trend in cloud computing is the integration of these service providers with other service providers. In fact, many cloud computing service providers are now offering their services on a pay-per-consumption basis. Hence, with the help of cloud computing, organizations can cut their IT costs to a large extent. Organizations can also integrate their data with other data from other service providers at a lower cost.
Cloud Computing refers to the concept of a virtual server running applications across multiple servers.
What Is Virtualization In Cloud Computing?
Virtualization is an integral part of this technology. In fact, it is a subset of virtualization, which encompasses much more functionality. Virtualization gives you the ability to run multiple applications on a single server by dividing the server into multiple virtual machines. The benefits of virtualization are clear: it reduces IT costs, it allows users to make use of the resources only when they require them, and it makes information more accessible and controllable.
Virtualization gives users the ability to use the server as they wish without concern for scalability. There are four main components of cloud computing:
- Load balancing
- Central management
- Service discovery
High-availability Assurance Service
HAAS or High-availability Assurance Service is used to guarantee the availability of a web server. With a HAAS system, there is no concern for maintaining huge data centers, as each node will be located in a data rack inside the network, which guarantees high speed and low cost of operation. In addition, with a HAAS system, administrators can easily gain access to multiple nodes and configure their HAAS policies according to specific business requirements.
There are many cloud computing providers that offer load balancing and disaster recovery solutions for an on-demand basis through HAAS virtualization.
Virtual private cloud is a highly effective solution that enables you to get all your data center needs while maintaining a low-cost virtualized environment. You get highly efficient infrastructure, the ease of managing and monitoring becomes easy, and you can use a custom software development environment.
It provides a complete solution for running servers, desktops, mail servers, storage servers, and database servers. This provides you with a highly cost-efficient data center without having to invest in costly infrastructure. In addition, you can make use of application scalability, and you can easily scale up your requirements without any downtime.
When talking about infrastructure servers, users need to choose between internal and external cloud computing services. These two types offer various benefits to organizations, depending upon their requirements.
If you want to build a very large enterprise, then you may go for an external IT company. However, if you want to start a small organization, it is recommended to build an internal cloud computing platform, as this would reduce the cost to a great extent and increase user access to resources.
Another benefit offered by cloud computing is virtualization. With virtualization, multiple virtual machines can be run in a single physical machine, which allows organizations to make quick utilization of their resources.
Therefore, you can enjoy cost efficiency and improved flexibility, as well as higher scalability. You can easily run multiple virtualization environments within a single physical environment without any impact on overall system performance.
Benefits Of Cloud Computing
Cloud Computing has become one of the buzzwords in technology circles. Businesses are turning to it for all sorts of reasons, from saving money to getting more done with the resources they already have available. It also allows you to establish what’s essentially a second, virtual office for you to give you all the versatility of connecting to your virtual business anytime, anywhere.
But what are the benefits of Cloud Computing?
On-demand availability: Using cloud services gives businesses access to everything they need to run their day without having to pay for it. You only pay for the resources you use and by using the cloud services you can get all your applications and data whenever you need them. This means that businesses can be less constrained by their budgets when making purchases. This also lets you plan and deliver services more efficiently, as well as more cost-effectively. By moving applications off-site to servers maintained internally or rented out, there is no longer a need to spend money on purchasing more storage space, additional bandwidth, and more hardware for your virtualization. Instead, everything is kept on the cloud for easy access to any application at any time.
Cost efficiency: When you consider the costs of on-site hosting, data center rental, and other on-site requirements, it can really add up quickly. However, by using a cloud service, businesses can easily and very cost-efficiently meet their needs. You don’t have to worry about paying for multiple resources that you don’t actually need. Also, there is no more worrying about paying for upgrades or dealing with problems such as too much load on a server. All data is stored on the same server, and therefore there is never any overloading. As a result, this is one of the key takeaway points of cloud computing.
Increased business continuity: There are two major benefits that come from using a cloud service. The first is that it allows your businesses to save money because there is no need to maintain an internet connection. Instead, all your data is stored on the same server that is always available, and there is no need for you to purchase additional hardware. This is a big money saver for companies that have expanded into other locations.
Scalability: Managing your own IT infrastructure is never easy, and especially when you are spread out across the globe. In addition to maintaining your own servers, you also have to manage things like network connectivity, data centers, power sources, and so forth. With cloud computing services, it is much easier to maintain everything centrally. There is also the scalability to the needs of your company. With a variety of virtualization options, you can easily scale up or down depending upon how much activity there is on your website. In fact, some virtualization solutions offer a grid format, where you can easily keep track of your servers and resources.
Security: As mentioned earlier, there are multiple servers, and therefore multiple parts of protection. With a service like Amazon Web Services, you have the added advantage of implementing very high-end security protocols in your data centers, in addition to controlling access to individual servers.
Therefore, cloud providers are perfect for small businesses that cannot afford to spend a large amount on capital improvements for their data centers and administration. In addition to that, cloud providers often offer firewalls and other security protocols that help to protect your private data from outside sources, further protecting your business data and ensuring compliance with security standards.