Cloud Computing Solutions. Группа авторов
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programming interface) gives autonomous framework which has arrangement capacities and multi-tenure (fit for running numerous applications on a single framework simultaneously) engineering. The customer has the flexibility to make his own particular applications, which keep running on the supplier’s foundation. PaaS providers offer a predefined course of action of OS and application servers [6, 17-25].
2.6.3 SaaS CSPs
Salesforce is a customer relationship management (CRM) platform, that conveys to organizations on the web utilizing the SaaS model.
Salesforce.com was established in 1999 by the previous Oracle official Marc Benioff. In June 2004, the organization opened up to the world on the New York Stock Exchange underneath the stock image CRM. Beginning speculators in Salesforce.com were Marc Benioff, Larry Ellison, Halsey Minor, Magdalena Yesil and Igor Sill of Geneva Venture Partners.
Salesforce is headquartered in San Francisco, California, and has home offices in Dublin, Singapore and Tokyo (covering Japan). Salesforce.com has its services converted into 15 distinct dialects and as of now has 43,600 clients and more than 1,000,000 endorsers.
2.7 Summary
Cloud computing has become a buzzword in the current IT industry as well as in academic research, which is strongly concerned with customer involvement with cloud service providers. The main concept behind cloud computing is on-demand sharing of resources available in the resource pool, which implies new emerging and promising business models. This chapter has described different perspectives on cloud computing along with the characteristics of cloud computing. Cloud service models and cloud deployment models have also been described. In the later part of the chapter, some examples of cloud CSPs were also discussed.
EXERCISES
1 State the basic principles of cloud computing.
2 Why is cloud computing so popular in the era of the internet? Justify your answer with an appropriate example.
3 Explain how the cloud computing environment caters to the needs of customers and providers.
4 Are the cloud deployment models based on security and privacy issues or not? Justify your answer with suitable examples.
5 Justify the following: “Cloud is more suitable for the large organizations.”
6 State some commercially available clouds for public, private and hybrid clouds.
7 State the characteristics of public cloud.
8 Are the cloud services used by the cloud user according to their requirements? Explain with suitable examples.
9 State the characteristics of private cloud.
10 How is the hybrid cloud infrastructure a combination of public and private cloud?
11 What is community cloud and how is it different from private and public clouds?
12 Give at least two examples where virtualization plays a significant role in RaaS and IaaS.
13 State the applications of PaaS and SaaS. And also give some examples of PaaS and SaaS.
14 What is IaaS? Give at least one commercially available service provider that allows the user to rent computers to run and deploy their applications.
15 Write short notes on:(a) Aneka Cloud(b) Salesforce.com(c) Google App Engine.
16 What is on-demand functionality? How is it provided in cloud computing?
17 What are the platforms used for large-scale cloud computing?
18 What are the different models for deployment in cloud computing?
19 What is the difference between cloud computing and mobile computing?
20 What is the difference between scalability and elasticity?
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