COMPUTER TRAINING COURSE- CLOUD COMPUTING / HOSTING

Source:- Freshersworld

What is cloud Computing ?

Cloud computing is a colloquial expression used to describe a variety of different types of computing concepts that involve a large number of computers connected through a real-time communication network (typically the Internet).Cloud computing is a jargon term[citation needed] without a commonly accepted unequivocal scientific or technical definition. In science, cloud computing is a synonym for distributed computing over a network and means the ability to run a program on many connected computers at the same time. The phrase is also, more commonly used to refer to network-based services which appear to be provided by real server hardware, which in fact are served up by virtual hardware, simulated by software running on one or more real machines. Such virtual servers do not physically exist and can therefore be moved around and scaled up (or down) on the fly without affecting the end user - arguably, rather like a cloud.

Why cloud computing ?

Cloud computing can completely change the way companies use technology to service customers, partners, and suppliers. Some businesses, such as Google and Amazon, already have most of their IT resources in the cloud. They have found that it can eliminate many of the complex constraints from the traditional computing environment, including space, time, power, and cost.

A perusal through recent job openings provides a glimpse of the new emerging class of professionals and managers who will make IT happen in the years ahead.  Here are just a few job titles and descriptions culled from recent help-wanted sites — note how much engagement there is with the business:

• Cloud Specialist: This professional will “provide expertise, design, engineering, troubleshooting of the cloud environment, collaborate with project managers and engineers to ensure cloud computing best practices are followed and applied.”
• Cloud Computing Architect: “Serves a critical role to drive the architect/design and implementation for [our] cloud-based solutions. Drive the architecture/design and implementation to migrate [our product] to a cloud-based PaaS and SaaS product. Interact effectively with CTO, product manager, and engineering managers to drive an optimized solution under known constraints. Mentor the team to adopt development and QA processes or best practices for cloud computing.  Provide innovative idea or direction to [our] product.’
• Systems Engineer – Cloud Computing: “This individual will be a member of the system engineering team and will support an initiative to transition [federal agency] services to a cloud computing environment. The job will include developing the agency’s cloud computing strategy, cloud suitability assessment, and  3-5 year cloud computing plan for an environment that is comprised of programs that are safety critical (high RMA, security, and performance levels) and as well as administrative and support. Strong oral and written communication skills are necessary and individual who is self-motivated and eager to research and identify solutions critical to the public.”
• Lead Software Developer – Cloud Computing Focused: “This position is a great  opportunity for someone who is motivated by building high business value applications and working with smaller teams to directly influence company growth. [We need] you to put your emerging cloud technologies skills to use designing and developing the next generation of software. Lead technological foray into cloud based platforms such as SalesForce.com, Azure, Google, & Amazon.”
• Cloud Architect – Infrastructure: “This is a technical role where you will be working with key clients and prospects helping them architect proper cloud solutions. Prime responsibilities include designing and architecting innovative and practical cloud based solution for clients; defining and recommending the cloud adoption roadmap for clients; interacting at the client’s CIO/CTO levels and their architecture teams.”
• Cloud Alliance Manager: “Focuses on the overall, ongoing management of [our] cloud computing service provider partnerships. This is done through the development and implementation of successful marketing programs unique to the specific cloud category, business units and selling venues, supported by the development of competitive strategies relative to vendors, pricing, assortment and solutions.”
• Virtualization & Cloud Computing Subject Matter Expert: “Will support cloud computing strategy and roadmap development from a mission and technical perspective including identification of potential obstacles and solutions regarding the use of cloud computing in a client environment.

PPT ON CLOUD COMPUTING ARCHITECTURE

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Cloud Computing Architecture Presentation Transcript:
1.CLOUD COMPUTING

2.CONTENTS
Definition Of Cloud Computing
Characteristics Of A Cloud Service
Service Models
Types Of Cloud Computing
Advantages and disadvantages of cloud computing

3.WHAT IS CLOUD COMPUTING? 
DEFINITION:
Cloud computing is an emerging paradigm in the computer industry where the computing is moved to a cloud of computers.
Cloud is a term used as a metaphor for the wide area networks (like internet) or any such large networked environment. It came partly from the cloud-like symbol used to represent the complexities of the networks in the schematic diagrams. 
It represents all the complexities of the network which may include everything from cables, routers, servers, data centers and all such other devices.

4.CHARACTERISTICS OF A CLOUD SERVICE
The characteristics of a cloud service is that it is normally:
Accessed via the internet
Paid by need and use
Adjusted up and down as needed and
Delivered from a platform of pooled computer resources

5.SERVICE MODELS:
The above literature apply to all clouds but each cloud provides users with services at a different level of abstraction, which is referred to as a service model in the definition.
The three most common service models are:

6.SERVICE MODELS:
1.SOFTWARE AS A SERVICE (SAAS):
 This is where users simply make use of a web-browser to access software that others have developed and offer as a service over  the web. 
At the SaaS level, users do not have control or access to the underlying infrastructure being used to host the software.
EXAMPLE:
Salesforce’s Customer Relationship Management software and Google Docs are popular examples that use the SaaS model of cloud computing.

7.2. PLATFORM AS A SERVICE (PAAS):
 This is where applications are developed using a set of  programming languages and tools that are supported by the PaaS provider. 
PaaS provides users with a high level of abstraction that allows them to focus on  developing their applications and not worry about the underlying infrastructure, Just like the SaaS model.
EXAMPLE:
Google App Engine and Microsoft  Azure are popular PaaS examples. 

8.3. INFRASTRUCTURE AS A SERVICE (IAAS):
This is where users  acquire computing resources such as processing  power, memory and storage from an IaaS provider  and use the resources to deploy and run their applications. 
In contrast to the PaaS model, the IaaS  model is a low level of abstraction that allows users to access the underlying infrastructure through the  use of virtual machines.
 IaaS gives users more flexibility than PaaS 
However, flexibility comes with a cost and users are responsible for updating and patching the operating  system at the IaaS level. 
EXAMPLE:
     Amazon Web Services’ EC2  and S3 are popular IaaS examples.

9.TYPES OF CLOUD COMPUTING
The service models described  in the definition are deployed in clouds, but there are  different types of clouds depending on who owns and uses them. 
This is referred to as a cloud deployment model in the definition and the four types of cloud computing  are:

10.1. PRIVATE CLOUD:
A cloud that is used exclusively by one  organization. 
The cloud may be operated by the  organization itself or a third party.
EXAMPLE:
The St Andrews Cloud Computing Co-laboratory and Concur  Technologies  are example organisations that have private clouds.

11.2. PUBLIC CLOUD:
A cloud that can be used (for a fee) by the general public. 
Public clouds require significant  investment and are usually owned by large corporations.
EXAMPLE:
such as Microsoft, Google or Amazon.

12.3. COMMUNITY CLOUD:
A cloud that is shared by several organisations and is usually setup for their specific  requirements. 
The Open Cirrus cloud test bed could be regarded as a community cloud that aims to support research in cloud computing .
EXAMPLE:
all Government organizations within the state of  Pakistan may share computing infrastructure on the cloud to manage data related to citizens residing in Pakistan.

13.4. HYBRID CLOUD:
A cloud that is setup using a mixture of  the above three deployment models. 
Each cloud in a  hybrid cloud could be independently managed but applications and data would be allowed to move  across the hybrid cloud. 
Hybrid clouds allow cloud bursting to take place, which is where a private cloud can burst-out to a public cloud when it requires more  resources.

EXAMPLE:
Sales force cloud computing for high/peak load requirements. 

14. ADVANTAGES:
Low –or no –start-up costs
Payment according to need/use
Great flexibility in relation to fast up-and downscaling of resource needs
Possibility of full service with maintenance 
Easier (and cheaper) access to new software versions

15. DISADVANTAGES:
Financial trade-off is necessary –it might be more expensive over time than an in-house solution 
Lack of control on operation and development
Costs of data traffic to and from the solution
Data security and return of data upon termination

Source: Power Point Presentations

PPT ON CLOUD COMPUTING

PPT On CLOUD COMPUTING
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CLOUD COMPUTING Presentation Transcript:

1. INTRODUCTION
Computing clouds provide computation, software, data access, and storage resources without requiring cloud users to know the location and other details of the computing infrastructure. Cloud computing is a technology that uses the internet and central remote servers to maintain data and applications. A simple example of cloud computing is Yahoo email, Gmail, or Hotmail etc. Cloud computing is broken down into three segments: "application" “storage" and "connectivity."

2. WHAT IS CLOUD COMPUTING
Business applications are moving to the cloud. It’s not just a fad—the shift from traditional software models to the Internet has steadily gained momentum over the last 10 years. Cloud-based apps can be up and running in days or weeks, and they cost less. With a cloud app, you just open a browser, log in, customize the app, and start using it. The latest innovations in cloud computing are making our business applications even more mobile and collaborative, similar to popular consumer apps like Face book and Twitter.

3. Cloud Software as a Service (SaaS) Use provider’s applications over a network Cloud Platform as a Service (PaaS) Deploy customer-created applications to a cloud Cloud Infrastructure as a Service (IaaS) Rent processing, storage, network capacity, and other fundamental computing resources

4. WORKING OF CLOUD COMPUTING 
Cloud computing has been changing how most people use the web and how they store their files. It mostly means a grid of computers serving as a service-oriented architecture to deliver software and data. With broadband internet, the need to have the software run on your computer or on a company’s site is becoming less and less essential. 

5. SECURITY ISSUES TO CLOUD COMPUTING
Check for viruses Perform regular operating system and browser updates. Check the forwarding and delegation settings in your account. Use a secure connection when signing in. Clear private data from your browser.

6. FEATURES OF CLOUD COMPUTING
Consumption based billing Rapid elasticity Self service based model Location and device independence

7. MERITS OF CLOUD COMPUTING
Reduced cost Increased Storage Highly Automated Flexibility Vast Range

8. CONCLUSION
cloud computing is truly a revolutionary concept for many business organizations. For managers dealing with the growing demand for IT in their respective organizations, cloud computing presents itself as an all-in-one solution, being able to satisfy the growing IT needs while, at the same time, reducing energy usage-all at an affordable price.

9. Thank You.

Source: Power Point Presentations