cloud.pptx
- 2. INTRODUCTION Cloud Computing is a general term used to describe a new class of network based computing that takes place over the Internet, basically a step on from Utility Computing a collection/group of integrated and networked hardware, software and Internet infrastructure (called a platform). Using the Internet for communication and transport provides hardware, software and networking services to clients These platforms hide the complexity and details of the underlying infrastructure from users and applications by providing very simple graphical interface or API (Applications Programming Interface).
- 3. What is Cloud Computing? In addition, the platform provides on demand services, that are always on, anywhere, anytime and any place. Pay for use and as needed, elastic scale up and down in capacity and functionalities The hardware and software services are available to general public, enterprises, corporations and businesses markets Cloud computing is an umbrella term used to refer to Internet based development and services A number of characteristics define cloud data, applications services and infrastructure: Remotely hosted: Services or data are hosted on remote infrastructure. Ubiquitous: Services or data are available from anywhere. Commodified: The result is a utility computing model similar to traditional that of traditional utilities, like gas and electricity - you pay for what you would want!
- 4. What is Cloud Computing? Many companies are delivering services from the cloud. Some notable examples include the following: ' Google — Has a private cloud that it uses for delivering Google Docs and many other services to its users, including email access, document applications, text translations, maps, web analytics, and much more. ' Microsoft — Has Microsoft@ Office 3650 online service that allows for content and business intelligence tools to be moved into the cloud, and Microsoft currently makes its office applications available in a cloud. ' Salesforce.com — Runs its application set for its customers in a cloud, and its Force.com and Vmforce.com products provide developers with platforms to build customized cloud services.
- 5. Basic Concepts There are certain services and models working behind the scene making the cloud computing feasible and accessible to end users. Following are the working models for cloud computing: • Deployment Models • Service Models
- 6. Deployment Models Deployment models define the type of access to the cloud, i.e., how the cloud is located? Cloud can have any of the four types of access: Public, Private, Hybrid and Community. Enterprise Enterprise Hybrid Cloud - Combining Public Internet a Private and Public Cloud Public internet Enterprise Private cloud in enterprise Clous services Public cloud
- 7. Deployment Models • PUBLIC CLOUD : The Public Cloud allows systems and services to be easily accessible to the general public. Public cloud may be less secure because of its openness, e.g., e-mail. • PRIVATE CLOUD : The Private Cloud allows systems and services to be accessible within an organization. It offers increased security because of its private nature. • COMMUNITY CLOUD : The Community Cloud allows systems and services to be accessible by group of organizations. • HYBRID CLOUD : The Hybrid Cloud is mixture of public and private cloud. However, the critical activities are performed using private cloud while the non- critical activities are performed using public cloud.
- 8. Service models Service Models are the reference models on which the Cloud Computing is based. These can be categorized into three basic service models as listed below: Infrastructure as a Service (laaS) Platform as a Service (PaaS) Software as a Service (SaaS)
- 9. Infrastructure as a Service (laaS) laaS is the delivery of technology infrastructure as an on demand scalable service. laaS provides access to fundamental resources such as physical machines, virtual machines, virtual storage, etc. ‘ Usually billed based on usage Usually multi tenant virtualized environment Can be coupled with Managed Services for OS and application support
- 10. Platform as a Service Platform as a Service (PaaS) the runtime environment for applications, PaaS provides development & deployment tools, etc. PaaS provides all of the facilities required to support the complete life cycle of building and delivering web applications and services entirely from the Internet. Typically applications must be developed with a particular platform in mind. ‘ Multi tenant environments ‘ Highly scalable multi tier architecture
- 11. Software as a Service (SaaS) Software as a Service (SaaS) SaaS model allows to use software applications as a service to end users. SaaS is a software delivery methodology that provides licensed multi-tenant access to software and its functions remotely as a Web-based service. ‘ Usually billed based on usage Usually multi tenant environment Highly scalable architecture
- 12. Cloud computing enables companies and applications, which are system infrastructure dependent, to be infrastructure-less. By using the Cloud infrastructure on "pay as used and on demand", all of us can save in capital and operational investment! Clients can: Put their data on the platform instead of on their own desktop PCs and/or on their own servers. They can put their applications on the cloud and use the servers within the cloud to do processing and data manipulations etc. purpose And benefits?
- 13. Opportunities and Challenges There are also issues relating to policy and access: If your data is stored abroad whose policy do you adhere to? What happens if the remote server goes down? How will you then access files? There have been cases of users being locked out of accounts and losing access to data
- 14. The Future •27 •Many of the activities loosely grouped together under cloud computing have already been happening and centralised computing activity is not a new phenomena Grid Computing was the last research-led centralised approach However there are concerns that the mainstream adoption of cloud computing could cause many problems for users Many new open source systems appearing that you can install and run on your local cluster should be able to run a variety of applications on these systems
- 15. Thanks