CLOUD COMPUTING

INTRODUCTION TO CLOUD COMPUTING:

• Cloud Computing is the use of hardware and software to deliver a service over a network (typically the Internet). With cloud computing, users can access files and use applications from any device that can access the Internet. An example of a Cloud Computing provider is Google's Gmail. 

• Cloud computing is the on-demand availability of computer system resources, especially data storage and computing power, without direct active management by the user. The term is generally used to describe data centers available to many users over the Internet. 

• Cloud computing allows consumers and businesses to use applications without installation and access their personal files at any computer with internet access. Cloud-based services are ideal for businesses with growing or fluctuating bandwidth demands. 

• Cloud computing services fall into 4 categories: infrastructure as a service (IaaS), platform as a service (PaaS), software as a service (SaaS) and FaaS (functions as a service). These are sometimes called the cloud computing stack, because they build on top of one another. 

• Simply put, cloud computing is the delivery of computing services—including servers, storage, databases, networking, software, analytics, and intelligence—over the Internet (“the cloud”) to offer faster innovation, flexible resources, and economies of scale 

Types of Computing Environments 

• Personal Computing Environment.

• Time Sharing Computing Environment.

• Client Server Computing Environment.

• Distributed Computing Environment.

• Cloud Computing Environment.

• Cluster Computing Environment.

-A private cloud is a proprietary network or a data center that supplies hosted services to a limited number of people. Private or public, the goal of cloud computing is to provide easy, scalable access to computing resources and IT services. 

- Building and Deploying Social Network Applications on Clouds. Portability of applications and data between different cloud providers. Reliability of applications and services running on the cloud. ... Experience with Building and Using Cloud Infrastructure.