cloud computing

A type of Internet-based computing," where different services — such as servers, storage and applications —are delivered to an organization's computers and devices through the Internet

It relies on sharing computing resources rather than having local servers or personal devices to handle applications

Reduction in computing costs

Virtualization

On-demand self service

Rapid elasticity

Consumption-based billing

Software as a Service (Saas)

Platform as a Service (Paas)

Infrastructure as a Service (Iaas)

Users do not manage the infrastructure and platform where the application runs

This eliminates the need to install and run the application on the user's own computers

Users are provided access to application software and databases

SaaS is usually priced on a pay-per-use basis

Allows users to create their own cloud applications using specific tools and languages

Facilitates rapid development at low cost

Can be used or public or private deployment

Allows users to run any application on the cloud hardware of their choice

Physical infrastructure is abstracted to provide computing , storage and networking as a service

Thus eliminating the need for dedicated systems

Private cloud

Public cloud

Hybrid cloud

Community cloud

Cloud infrastructure operated solely for a single organization

Capital intensive

Dedicated resources

Customized and tailored policies

Objective is to maintain a consistent level of control over security, privacy and governance

Services are rendered over a network that is open for public use

Cloud infrastructure is homogenous

Shared utilization of resources

No wasted resources because it is used as “pay-as-you-go” basis

Scalability to meet needs

Composition of two or more clouds that offers the benefit of multiple deployment models

So, it extends the capacity of the cloud service

Shares infrastructure between several organizations from a specific community with common concerns

Less cost-efficient

Refers to the components and subcomponents required for cloud computing

Components typically consist of a front end platform, back end platforms, a cloud based delivery, and a network

Combined, these components make up cloud computing architecture

Cost efficient

Almost unlimited storage

Backup and recovery

Automatic software integration

Easy access to information

Security breaches

Vendor lock-in

Performance interference and noisy neighbours

Consumer end storage

Monopolies and privatization of cyberspace

It is touted as the next big thing in the history of computing

It has reached a maturity that leads it into a productive phase

Together with it’s pros and cons, it will only grow exponentially from now on

www.wikipedia.com

Cloud computing videos in www.youtube.com

www.cloudcomputinginsights.com

SD