Saturday, June 15, 2013

Types of Cloud

In general, there are three types of cloud based on deployment

1.Public Cloud
2.Private Cloud
3.Hybrid Cloud

Public Cloud provides services to anyone on the internet.Since these are run by third party so it can be used by simply login to their cloud framework.

Private Cloud provides services to limited number of user. It usually applied in big enterprises to provide services to their people.

 Hybrid is a composition of two or more clouds that remain unique entities but are bound together.

Based on offering depending on the amount of control that you have over your information,there are mainly three types of cloud:
1.SaaS(Infrastructure as a Service)
2.PaaS(Platform as a Srvice)
3.IaaS(Software as a Service)

Saas is a software deployment model where software and an application are hosted on the cloud as a service provided to customers across the internet. It takes out the burden of software cost, maintenance and support but upgradation of software and application according to requirement is not applicable by end users. Here we can get so many applications to avail such as Office Automation, Virtual Desktop, DBMS software, Management software, CRM (Customer Relationship Management), MIS (Management
Information System), ERP (Enterprise Resource Planning), HRM (Human Resource Management),game etc. It is useful for mainly business users to complete their business tasks.

PaaS is acting as software development model where we used to create and develop software by using the required service as tools and specific libraries offered by the provider. It gives consumer access to all infrastructures (execution runtime, web server, development tools) that they require to develop and operate applications over the internet such as networks, server, storage and other required services. Consumer can access custom application built on the cloud.

IaaS provides infrastructure resources such as virtual machine, operating system, message queue, network storage, CPU, memory, backup services and etc. It allows the consumers to begin working on whatever they want by the services provided. It provides scalability, reflexivity to computing resources.

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