Cloud Computing &Impact of IT on organization

Cloud Computing• Cloud computing  is computing in which large groups of remote servers are networked to allow centralized data storage and online access to computer services or resources

Characteristics

• Agility• Application Programming Independence• Cost• Device and location Independence• Maintenance• Performance• Productivity• Reliability• Elasticity

Types of cloudsPublic Cloud• Computing infrastructure is hosted by cloud vendor at the vendors premises.• and can be shared by various organizations.• E.g. : Amazon, Google, Microsoft, Sales force

Private Cloud• The computing infrastructure is dedicated to a particular organization and not shared with other organizations.• more expensive and more secure when compare to public cloud.• E.g. : HP data center, IBM, Sun, Oracle, 3tera

Hybrid Cloud • Organizations may host critical applications on private clouds.• where as relatively less security concerns on public cloud.• usage of both public and private together is called hybrid

cloud.

Cloud service models

Software as a Service (SaaS):• It is an application that can be accessed from anywhere on

the world as long as you can have an computer with an Internet Connection.

• We can access this cloud hosted application without any additional hardware or software.

• E.g. : G-mail, Yahoo mail, Hotmail etc.

Advantages of Consuming SaaS

•Typically more powerful & secure than in house operations

•Has a low cost of ownership and frees up I.T. space.

•Applications being offered are typically good or else people would find business else where.

Platform as a service (PaaS):

• gives us nice API (Application Programming Interface) and take care of the implementation.

• In the PaaS model, cloud providers deliver a computing platform and/or solution stack typically including operating system, programming language execution environment, database, and web server.

• is a platform for developers to write and create their own SaaS i.e. applications.

• E.g.: Google App engine, Windows Azure etc.

Advantages of Consuming PaaS•Each platform component is provided as a service.

•The services it has the functionality to support a complete life cycle of developing and completing web applications .

•Has the ability to host, maintain, test in its own integrated development environment

Infrastructure as a service(IaaS)

• Infrastructure as a Service is a provision model in which an organization outsources the equipment used to support operations, including storage, hardware, servers and networking components.

• cloud providers offer computers – as physical or more often as virtual machines – raw (block) storage, firewalls, load balancers, and networks

Advantages of Consuming IaaS

• It is a metered service, you pay for what you use.

•Dynamic scaling that allows you to pool your resources accordingly.

•Good investment for smaller companies that can’t afford a full networked infrastructure.

•Allows current IT team to shift focus onto more important issues.

The table below is showing a comparison among the 3 cloud computing service models:

Impact of IT on Organization

Information technology (IT) is dramatically changing the business landscape. IT significantly affects strategic options and creates opportunities and issues that managers need to address in many aspects of their business.

some of the key impacts of technology on organizations are;• Business Strategy: IT creates new opportunities for innovation in products

and services. Services which used to be delivered in person can now be delivered over networks.

• Organization Culture: Newer types of IT such as electronic mail and groupware are

creating significant changes in the way that information flows around group ware, and between them and their customers and suppliers. It can hasten the development of more open and innovative cultures

• Management Process: IT is rapidly entering the era where it supports unstructured

management processes as well as highly routinized business processes. It provides more effective ways of accessing information from multiple sources, including use of external information on databases and the Internet.

• Work: IT is dramatically changing the nature of professional work.

Becoming effective not only requires traditional skills of organizing, thinking, writing etc., but knowing how best to use the power of IT for researching sources, accessing information, connecting to experts.

• Economic Impacts: From the point of view of economics, IT changes both the

relative costs of capital and the costs of information. Information systems technology , especially the use of networks, can help firms lower the cost of market participation, making it worthwhile for firms to contract with external suppliers instead of using internal sources.