You're looking to understand the topics: What Is Cloud Hosting? Features and benefits of cloud hosting, How to choose Cloud Hosting,... please read this article.
Cloud hosting services provide hosting for websites on virtual servers which pull their computing resource from extensive underlying networks of physical web servers. It follows the utility model of computing in that it is available as a service rather than a product and is therefore comparable with traditional utilities such as electricity and gas. Broadly speaking the client can tap into their service as much as they need, depending on the demands of their website, and they will only pay for what they use.
It exists as an alternative to hosting websites on single servers (either dedicated or shared servers) and can be considered as an extension of the concept of clustered hosting where websites are hosted on multiple servers. With cloud hosting however, the network of servers that are used is vast and often pulled from different data centres in different locations.
Practical examples of cloud hosting can fall under both the Infrastructure as a Service (IaaS) and Platform as a Service (PaaS) classifications. Under IaaS offerings the client is simply provided with the virtualised hardware resource on which they can install their own choice of software environment before building their web application. On a PaaS service however, the client is also provided with this software environment, for example, as a solution stack (operating system, database support, web server software, and programming support), on which they can go straight to installing and developing their web application. Businesses with complex IT infrastructures and experienced IT professionals may wish to opt for the more customisable IaaS model but others may prefer the ease of a PaaS option.
A development of the concept of cloud hosting for enterprise customers is the Virtual Data Centre (VDC). This employs a virtualised network of servers in the cloud which can be used to host all of a business’s IT operations including its websites.
The more obvious examples of cloud hosting involve the use of public cloud models - that is hosting websites on virtual servers which pull resource from the same pool as other publicly available virtual servers and use the same public networks to transmit the data; data which is physically stored on the underlying shared servers which form the cloud resource. These public clouds will include some security measures to ensure that data is kept private and would suffice for most website installations. However, where security and privacy is more of a concern, businesses can turn towards cloud hosting in private clouds as an alternative - that is clouds which use ring-fenced resources (servers, networks etc), whether located on site or with the cloud provider.
Features and benefits of cloud hosting
Reliability: rather than being hosted on one single instance of a physical server the website is hosted on a virtual partition which draws its resources, such as disk space, from an extensive network of underlying physical servers. If one server goes offline, it dilutes the level of resource available to the cloud a little but will have no effect on the availability of the website whose virtual server will continue to pull resource from the remaining network of servers. Some cloud platforms could even survive an entire data centre going offline as the pooled cloud resource is drawn from multiple data centres in different locations to spread the risk.
Physical Security: the underlying physical servers are still housed within data centers and so benefit from the security measures that those facilities implement to prevent people accessing or disrupting them on-site.
Scalability and Flexibility: resource is available in real time on demand and not limited to the physical constraints/capacity of one server. If a client’s site demands extra resource from its hosting platform due to a spike in visitor traffic or the implementation of new functionality, the resource is accessed seamlessly. Even when using a private cloud model the service can often be allowed to ‘burst’ to access resources from the public cloud for non-sensitive processing if there are surges in activity on the site.
Utility style costing: the client only pays for what they actually use. The resource is available for spikes in demand but there is no wasted capacity remaining unused when demand is lower.
Responsive load balancing: load balancing is software based and therefore can be instantly scalable to respond to changing demands.
How to Choose Cloud Hosting
There are numerous hosting options available for businesses as well as individuals. These options include shared hosting, VPS hosting, dedicated servers and cloud hosting. Cloud hosting is a relatively newer version of hosting and is dynamically scalable enabling businesses to adjust and change hosting resources according to the growth of the business.
Cloud hosting varies from shared hosting in a lot of ways. Due to this reason, there are different considerations to keep in mind while selecting cloud hosting. If you want to jump on the bandwagon of cloud hosting, follow the tips mentioned below.
Operating System: Mostly, cloud hosting plans come with the choice to select your own operating system. The most common options available are Windows or Linux based cloud hosting. Both these operating systems have their set of pros and cons. You will need to select one after weighing both options and matching them with your needs. Windows is user friendly; however, it is expensive and not so fast. Linux is complicated for new users, it is cheap, and offers better performance and speed.
Control Panel: A control panel is an extremely important feature when it comes to hosting as it allows the website owner to manage the website and the content. Therefore, the more user-friendly the control panel is, the better it is for you. Check out different control panel options available, research a little about their benefits and weaknesses and select the one you like the most. Among the most common and popular control panels is cPanel. Plesk is another widely used control panel.
Consider Payment Options: Hosting companies offer hosting packages on a year to year subscription basis. Some also offer plans on a monthly basis. Therefore, determine how long you will need the hosting services for. If you do not want to limit yourself because of a contract, you may choose monthly paid plans; however, these plans might cost you a little more.
Determine the Space and Bandwidth Needs: You need to determine your needs beforehand. Different cloud hosting providers have different costs on bandwidth usage. Some may offer free unlimited incoming bandwidth, others may provide limited bandwidth. Also, determine the disk space which will be enough for your current business needs. Some hosting providers may also offer flexible pricing with regards to used resources. You may only need to pay for the resources which you used. These options are very beneficial as they give you the best value for money.
Scalability: Scalability refers to the flexibility offered by hosting companies to upgrade your plans according to business needs. As the business grows, the needs also change and you may require more and more bandwidth and space to cater for the increasing web traffic. If your hosting provider allows you to upgrade your plan, it is the best deal for you.