Cloud Web Hosting
Cloud Hosting provide web hosting for sites on virtual web server which pull computing resources from an extensive underlying the networks of web servers. This follows utility model of web computing which is available as service rather than product and is comparable with utilities like gas and electricity.
Clients can tap services as they need, this depends on demands of clients for their website, as client pay for that service which they use.
This exists as an alternate to host websites on web servers and can be considered as extension of concept of clustered web hosting where websites are being hosted on more than one server.
Using cloud hosting services, a network of web servers is being used and is vast and pulled from different number of data centers in number different locations.
Cloud Hosting fall under IaaS i.e Infrastructure as a Service and PaaS i.e Platform as a Service classification. IaaS offers virtualized hardware resource to the client on which they can easily install software of their choice. This is done before building web application.
On PaaS service, client is provided with software environment, as solution stack, on which this can go to install and develop a web application. Business with a very much complex IT infrastructure and IT professionals wish to opt more customisable IaaS model, and other prefer ease of PaaS option.
Development of concept of cloud web hosting for enterprise customers is Virtual Data Centre. This gives a virtual network of web servers in cloud which can be used to host business websites.
Cloud Hosting involves use of public cloud model, which is hosted on virtual web servers that pull the resources from same pool as others are available as virtual servers and use same network to transmit data, the data which is stored physically on underlying the shared web servers which forms cloud resource.
Public Clouds include security measures to ensure data which is kept private. Privacy and Security is of more concern, business turns towards cloud hosting in the private cloud as alternative.
Cloud Hosting offers the following features:
- Reliability: Cloud Hosting is much secure as this is being hosted on one instance of physical server, website is being hosted on virtual partition that draws resource, like physical web servers and disk space. If a web server goes offline, this dilutes level of available resources to cloud but this will be having no effect on availability of website whose virtual servers are still continue to pull the resources from remaining network of web servers. Some of the cloud platforms survive entire data centre go offline as pooled cloud resources from multiple data centres in the different locations to spread risk.
- Physical Security: Underlying servers are housed in data centers and benefit from security measures which gives facilities to implement to prevent people accessing.
- Utility: Client pays for what they actually use. Resources which actually use. These resources are too much in demand but this is not having wasted capacity when demand is low.
- Load Balancing: Load Balancing is a software based and can be scalable to respond changing demands.