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Cloud computing


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Cloud computing

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  2. 2. “Cloud Computing is a style of computing where massively scalable IT-enabled capabilities are delivered ‘as a service’ to external customersusing Internet technologies “Cloud computing is a marketing term for technologies that providecomputation, software, data access, and storage services . The two advantages of this is Ease-of-use Cost-effectiveness
  3. 3. Cloud Computing ModelsCloud computing offers a variety of ways for businesses to increase their IT capacityor functionality without having to add infrastructure, personnel, and software.Cloud Providers offer services that can be grouped into three categories Software as a Service (SaaS): These are on-demand end-user software applications like Google Apps,’s CRM and business management services etc. Platform as a Service (Paas): The platform used to design, develop, build & test applications are provided by the cloud infrastructure. Examples are Google’ s App Engine and Infrastructure as a Service (Iaas): In this pay per use model, services like storage, database management & compute capabilities are offered on demand. Some common examples are Amazon, Go Grid, 3 Tera, etc.
  4. 4. Benefits of Cloud ComputingCloud computing is a comprehensive solution that delivers IT as a service.Some benefits are here. Access a huge range of applications. Applications can be accessed from the computer in anywhere. Users can avoid expenditure on hardware and software. Companies can share resources in one place. With minimum cost. Scalability via on-demand resources.
  5. 5. Types of Cloud ComputingCloud computing can be divided into three different models: public,private and hybrid. Public Cloud: Available publicly - any organization may subscribe. Private Cloud : Services built according to cloud computing principles, but accessible only within a private network .Hybrid Clouds : It could be a combination of a private cloud insideorganization with one or more public cloud providers
  6. 6. Cloud Computing ArchitecturesCloud Computing Architecture is web based, internet or “cloud" based progressionand the use of computer technology. Is Agile Is decreases Cost Is appliance and location freedom Is engages Multi-tenancy It can be further secure because of centralization of Is Reliable Is very scalable data and backup recovery Is sustainable Is simpler to maintain Is metered
  7. 7. Five Characteristics of Cloud Computing• On-demand self-service: Individuals can set themselves up without needing anyone’s help.• Ubiquitous network access: Available through standard Internet-enabled devices.• Location independent resource pooling: Processing and storage demands are balanced across a common infrastructure with no particular resource assigned to any individual user. • Rapid elasticity: consumers can increase or decrease capacity at will. • Pay per use: consumers are charged fees based on their usage of a combination of computing power, bandwidth use and/or storage
  8. 8. Cloud Computing ChallengesCloud computing are rapidly gaining enterprise adoption, many ITprofessionals remaining skeptical, issues like security and standards continueto challenge this emerging technology.Some common challenges are:  Data Protection  Data Recovery and Availability  Management Capabilities  Regulatory and Compliance Restrictions
  9. 9. Cloud Computing RisksInternet outage may degrade the quality of service for end users.The physical security of the data center may be compromised,causing a loss of service or data.Privacy may be compromised or applications may be misused ifdata is accessed by unauthorized users. Software employed to manage data center resources can malfunction, causing interruption in services. A SaaS provider may go out of business, leaving customers without access to their data or critical software applications.