A Review Paper on Cloud Computing

A Review Paper on Cloud Computing

Aakash Tyagi

Department of Electronics & Communication Vivekananda Institute of Technology, Jaipur Jaipur, India

Abstract: On demand or on pay per use of resource such as: network, storage and server these all facilities are provided by cloud computing through internet is called cloud computing. Although, cloud computing is facilitating the Information Technology industry, the research and development in this arena is yet to be satisfactory. We have contribution in this paper is an advanced survey focusing on cloud computing concept and most advanced research issues. This paper provides a better understanding of the cloud computing and identifies important research issues in this burgeoning area of computer science. Section 1 contains the introduction, in the section 2, we provide an overview of cloud computing, section 3 contains the security architecture and section 4 will focus on the research issues and security issue. We conclude the paper on section 5 along with references. Keywords: Cloud Computing; Security issue Virtualization; Data Center; Server Consolidation; cloud security.

INTRODUCTION

Cloud Computing is define as a distributed architecture that centralizes server resources on a scalable platform so as to provide on demand computing resources and services. Due to the unprecedented success of internet in last few years, computing resources is now more ubiquitously available. And this is enabled the realization of a new computing concept called Cloud Computing. Cloud Computing environment requires the traditional service providers to have two different ways. These are infrastructure and service providers. Infrastructure providers manage cloud platforms and lease resources according to usage. Service providers rent resources from infrastructure providers to serve the end users. Cloud Computing has attracted the giant companies like Google, Microsoft, Amazon and considered as a great influence in todays Information about technology industry. Business owners are attracted to cloud computing concept because of several features. Although cloud computing has shown considerable opportunities to the IT industries of todays world, but still there are number of challenges that requires to be carefully addressed. In our paper, we present a survey of cloud computing and state of- the-art research challenges. Our aim is to provide a better understanding of cloud computing and focus on the research which is ongoing in this tremendously flourishing arena of computer science.

CLOUD COMPUTING OVERVIEW

Cloud computing is a way of leveraging the Internet to consume software or other IT services on demand. Users share processing power, storage space, bandwidth, memory, and software. With cloud computing, we shared the resources and so the costs. Users can pay as they go and only use what they need at any given time, keeping cost to

the user down. Cloud computing is a business model as well. Providers of cloud computing solutions are software, hardware, platform, storage providers, deliver their offerings over the Internet. There are no shrink wrapped boxes containing discs or hardware for you to buy and set up yourself. Cloud providers typically charge monthly recurring fees based on your usage. Cloud computing is a collection of computing software and services available from a decentralized network of servers. The term cloud has long been used as a metaphor for the Internet, and there are many popular services and Web sites which you may already be enjoying, without being aware that they are cloud-based. Social networking sites, Web-based email clients like Gmail and Yahoo, Wikipedia and YouTube, and even peer-to-peer networks like Skype or Bit Torrent are all applications that run in the cloud. In other words, there is no one centralized location or organization that controls them, and nothing is required to utilize them besides a Web browser and an Internet connection. Enterprise cloud computing is for the business world. Instead of purchasing and installing the physical infrastructure necessary to run software programs, a business instead consumes resources on a software-as-a-service basis. Running individual applications such as Microsoft, SAP, or Oracle will require hardware as well as an extensive infrastructure to support it: office space, power, networks, servers, storage, cooling, and bandwidth, not require to mention it, the experts needed to install and run them. Cloud computing offers a streamlined, simplified solution to this complexity and the capital expenditure it necessitates.

KEY SECURITY ISSUES IN CLOUD COMPUTING

Cloud computing consists of applications, platforms and infrastructure segments. The given below are the various security concerns in a cloud computing environment.

• Access to Servers & Applications

• Virtual Machine Security

• Network Security

• Data Security

• Data Privacy

• Data Integrity

• Data Location

• Data Availability

• Data Segregation

• Security Policy and Compliance

• Patch management

  RESEARCH CHALLENGES IN CLOUD COMPUTING

  Cloud Computing research gives the challenges of meeting the requirements of next generation private, public and hybrid cloud computing architectures, also the challenges of allowing applications and development platforms to take advantage of the benefits of cloud computing. The research on cloud computing is at early stage. Many existing issues have not been fully addressed, while new challenges keep emerging from industry applications. Some of the challenging research issues in cloud computing are given below.

• Service Level Agreements (SLAs)

• Cloud Data Management & Security

• Data Encryption

• Migration of virtual Machines

• Interoperability

• Access Controls

• Energy Management

• Platform Management

CONCLUSION

One of the biggest security worries with the cloud computing model is the sharing of resources. The advancement of cloud computing is changing the horizon of information technology and ultimately turns the utility computing into a reality. However, it provides a large array of benefits, but also many challenges in this domain, such as automatic resource positioning, energy management, information security are only attracted the research community. There are still so many issues to be solved. Opportunities are enough in this arena for some groundbreaking contribution and bring significant development in the industry. In our paper, we have presented an overview of cloud computing and thrown light on the state-of-the-art research and future issues to be handled by the research community. Cloud computing is still at an early stage of research and development, we believe our paper will provide a better understanding of the cloud computing and different research issues, thereby bolstering further research in this arena.

REFERENCES

1. http://www.thesmallbusiness.org/software/benefits- ofcloudcomputing

2. http://www.allthingscrm.com/cloudcomputing/understanding