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cloud computing tutorial

In this tutorial we will cover basics of cloud, cloud computing,different cloud models,different service models, benefits and more. Follow following links to navigate the entire cloud computing tutorial.
cloud storage tutorial  What is Cloud Storage  Types  Infrastructure  How does it work  traditional storage vs cloud storage  Service providers  cloud storage security 

Cloud computing is the concept by which multiple customers across different locations share the internet based applications at very minimal or in some cases without incurring any cost. The applications will become utilities for them which can be shared by many. One such application is Google API which can be used to create web based applications. These applications are user friendly and customized for beginners. The applications are easy to create, to configure and can be customized based on need. There are many applications which can run using this concept such as free email, web conference,CRM etc.

The network or internet providing the service to the users is referred as cloud. It consists of private as well as public networks including LAN,WAN,MAN etc. The manipulation,configuration and access of various online applications is referred as cloud computing. It provides data storage using configured email accounts(e.g. drop box or google drive), infrastructure usage (e.g. use of costly equipments using remote connection based on lease) and applications as mentioned.

The beauty of cloud computing is that use need not have to install any software or operating system and can use the service provided by cloud computing from anywhere in very cost effective and convenient manner.

Working models basics

cloud computing models

Based on application need and resource requirements and to make use of them in a very effective and efficient manner, cloud computing is divided into two broad categories of models. They are deployment models and service models. The deployment type defines how the systems and services are used by the distributed users. Based on this concept there exists four models viz. public, private, community and hybrid clouds. Based on this concept there are IaaS(Infrastructure as a Service), PaaS(Platform as a Service) and SaaS(Software as a Service). Other than these models there is a model referred as XaaS which consists of "Anything as a Service".

Deployment Models:
Public cloud model is meant for general public to utilize the cloud computing service. These services are provided by microsoft,google,Amazon over basic internet infrastructure. Private cloud model is meant for communities within organization. As mentioned private model provides greater level of privacy and security to the businesses. Hybrid model is the combination of both private and public cloud models and hence take benefits of both the models. Community model helps access of service or system by a group of business establishments.

Service Models:
IaaS helps use of common infrastructure resources which includes physical systems,virtual storage and machines,load balancing, virtual LANs, IP address and more. PaaS provides online runtime environment for development and deployment of various applications using APIs. SaaS provides use of software applications to be used by end customers or users. Typical software applications under SaaS include customer relationship management, billing and invoice, Human resource management solutions and more.

cloud computing architecture

cloud computing architecture

Figure-2 depicts the architecture of the cloud computing. It consists of two parts referred as front end and back end. Front end refers to client side components such as web browser or FTP client or TELNET application etc.

The back end houses cloud components which need to be used by clients as shared resource. It includes storage devices, virtual systems, security systems, applications, infrastructure etc.

Both the frond end and back end parts are connected via internet as shown.

Cloud infrastructure houses management software,deployment software, servers, network devices, hypervisor(low level language referred as firmware), storage resources etc.

Benefits

•  Easy access to thousands of applications online
•  Manipulation and configuration of online applications as per need
•  No installation required at client side and hence provides platform independent service
•  No cost or minimal in using the resources
•  Private cloud keeps the business community secured from public
•  Public cloud provides way for general public users to share their knowledge base, products and their business updates
•  Offers load balancing
•  Supports multitenant solutions

Cloud Storage related links

cloud storage tutorial
What is Cloud Storage
Public vs private vs hybrid vs community cloud types
Cloud storage infrastructure
How does it work
traditional storage vs cloud storage
Cloud Service providers


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