Cloud computing


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No matter which provider you choose, you'll find that almost every cloud has these core characteristics:

It's virtual

Imagine racks of servers, humming along in a data center. Together, these servers become a massive pool of resources. Divide this "pool" into multiple virtual servers, and you create a "cloud."

It can be secure

For the utmost security, create a private cloud on dedicated hardware. But always remember to put appropriate security measures in place, no matter which cloud you choose.

It's flexible and scalable

Since virtual servers aren't physical, they are super flexible, giving you what you need at the moment. Spin up a server in minutes, and take it down just as easily.

It can be affordable

You'll get the greatest cost savings in the public cloud, where your virtual servers run on physical servers that you share with other customers.

It's open (or closed)

In the open cloud, you can easily move your cloud around—without being locked into one provider or a closed, proprietary technology.

It can be secure and affordable

A hybrid cloud gives you the benefits of both public and private clouds. For example, you can put public-facing components in a public cloud, while storing customer-sensitive data in a private cloud.The “cloud” in cloud computing can be defined as the set of hardware, networks, storage, services, and interfaces that combine to deliver aspects of computing as a service. Cloud services include the delivery of software, infrastructure, and storage over the Internet (either as separate components or a complete platform) based on user demand.Cloud computing has four essential characteristics: elasticity and the ability to scale up and down, self-service provisioning and automatic deprovisioning, application programming interfaces (APIs), billing and metering of service usage in a pay-as-you-go model.The world of the cloud has lots of participants:

The end user who doesn’t have to know anything about the underlying technology.

Business management who needs to take responsibility for the governance of data or services living in a cloud. Cloud service providers must provide a predictable and guaranteed service level and security to all their constituents. •The cloud service provider who is responsible for IT assets and maintenance.•The cloud service provider who is responsible for IT assets and maintenance.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.

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Cloud computing

  1. 1. CLOUD COMPUTING Decisions! Delivered !! SARAVANAN . M SALES MANAGER 20TH NOV 2013 Index : 1. Cloud Computing Intro 2. Characteristics 3. Service Model / Deployment Model 4. Service Model – SaaS / PaaS / IaaS 5. Deployment Model – Private / Public 6. Cloud Providers 7. Advantages of Cloud Computing 8. Disadvantages of Cloud Computing 9. Commercial Clouds 10. Conclusion & Thanks.
  2. 2. CLOUD COMPUTING :  Cloud computing is simply an IT service sold and delivered over the Internet  These are not new technologies but a new name applied to a collection of older technologies that are packed, soled and delivered in a new way.  Cloud computing is a computing model, not a new technology. In this model, the “customer” plug into the “cloud” to access IT resources which are priced and provided “on-demand”.
  3. 3. CHARACTERISTICS :  There are five essential characteristics of cloud computing :  On-demand Self service  Resource pooling  Rapid elasticity  Measured service  Broad network access.
  4. 4. SERVICE MODEL & DEPLOYMENT MODEL:  The 3 service models of Cloud  Similarly there 3 deployment models Computing are , also ,  SAAS (Software As A Service)  Public cloud  PAAS (Platform As A Service)  Private cloud  IAAS (Infrastructure As A Service).  Hybrid cloud.
  5. 5. SERVICE MODELS: (SAAS / PAAS / IAAS)  SAAS :Applications delivered as a service to end users over the internet .  (eg: Gmail , Google apps, AOL messaging).  PAAS :Application development & deployment platform delivered as a service .  (with: OS, Server hardware, load balancing or computing capacity. Providers are – Microsoft Azure, oracle, Google maps, sales force`s  IAAS : Server-storage, network hardware& associated software delivered as a service.  (raw virtual servers, on demand that customers configure and manage. The Vendors are :IBM, (elastic compute cloud[EC2} and simple storage)
  6. 6. DEPLOYMENT MODELS: (PUBLIC/ PRIVATE) Public Cloud Public Cloud : • Lowers upfront costs • Economies of Scale • Simpler to manage Private Cloud SaaS SaaS PaaS Intrane t PaaS IaaS IaaS Both Cloud Offers • High Efficiency : • High Availability • Elastic Capacity Private Cloud : • Lowers Total costs • Greater control over security & quality of Service • Easy Integration • CapEx and OpEx
  8. 8. ADVANTAGES OF CLOUD COMPUTING:  Increased Speed # 24 hrs provisioning, # Online self service, # Credit card Acquisition.  Increased Scalability # Increase capacity ~ 24 hrs, # “Turn on & Turn off “ monthly, # Capacity on demand.  Reduce Cost # pay only for what you need, # Month – month Service, # No Annual Maintenance Fee.
  9. 9. DISADVANTAGES OF CLOUD COMPUTING:  Requires a constant Internet connection  Does not work with low speed connections.  Cloud Computing is impossible if you cannot connect to the internet.  When you are offline, Cloud Computing doest not work.  Stored data can be lost / might not be secure. There is No physical or local backup.  Limited features.
  10. 10. COMMERCIAL CLOUDS Commercial cloud providers in the market !