Cloud computing

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Cloud computing:

Cloud computing


Introduction The term cloud computing was first used in an academic context by Prof. Kenneth K Chellapa, who described it in 1997 at the Informs Conference in Dallas. According to him cloud,“a computing paradigm where the boundaries of computing will be determined by economic rationale rather than technical limits”.


Definition Cloud is a virtualised pool of computing resources. Cloud computing providing unlimited infrastructure to store and execute customer data and program. A model of computation and data storage based on “pay as you go” basis

Service models:

Service models Software-as-a-service(SaaS):Software as a service is software that’s deployed over the internet and/or is deployed to run behind a firewall in local area computer or pc. Platform-as-a –service(PaaS):platform as a service another SaaS, the provider provides a platform for use. Services provided by this model include all phases of the system development life cycle (SDLC). Infrastructure-as-a-service(IaaS):Infrastructure as a service delivers a platform virtualisation environment as a service.

Cloud Deployment models:

Cloud Deployment models Private/Enterprise Clouds Cloud computing model run within a company’s own Data Center / infrastructure for internal and/or partners use. Public/Internet Clouds 3rd party, multi-tenant Cloud infrastructure & services: * available on subscription basis (pay as you go) Hybrid/Mixed Clouds Mixed usage of private and public Clouds: Leasing public cloud services when private cloud capacity is insufficient


Benefits Minimized Capital expenditure Location and Device independence Utilization and efficiency improvement Very high Scalability High Computing power

Cloud characteristics:

Cloud characteristics Cloud computing shares characteristics with: Autonomic computing — computer systems capable of self-management. Client–server model – client–server computing refers broadly to any distributed application that distinguishes between service providers (servers) and service requesters (clients). Grid computing— "a form of distributed computing and parallel computing, whereby a 'super and virtual computer' is composed of a cluster of networked, loosely coupled computers acting in concert to perform very large tasks." Mainframe computer — powerful computers used mainly by large organizations for critical applications, typically bulk data processing such as census, industry and consumer statistics, enterprise resource planning, and financial transaction processing.


Contd… Utility computing— the "packaging of computing resources, such as computation and storage, as a metered service similar to a traditional public utility, such as electricity." Peer-to-peer – distributed architecture without the need for central coordination, with participants being at the same time both suppliers and consumers of resources (in contrast to the traditional client–server model). Service-oriented computing – Cloud computing provides services related to computing while, in a reciprocal manner, service-oriented computing consists of the computing techniques that operate on software-as-a-service.

Cloud computing issues:

Cloud computing issues Security Privacy Reliabilty Legal issues Open standard Long term viability Compliance Here we consider the security issue as a major concern……..

Cloud computing security:

Cloud computing security Cloud computing security (sometimes referred to simply as "cloud security") is an evolving sub-domain of computer security, network security, and, more broadly, information security. It refers to a broad set of policies, technologies, and controls deployed to protect data, applications, and the associated infrastructure of cloud computing. Cloud security is not to be confused with security software offerings that are "cloud-based" (a.k.a. security-as-a-service). Many commercial software vendors have offerings such as cloud-based anti-virus or vulnerability management.


Contd... Heightened security threats must be overcome inorder to get benefits from this computing paradigm.There are 10 security concerns which briefly tell about the issues in this new era.. Solving some of the security issues to keep maintaining the confidentiality,integrity,availability(CIA)…

Issues :

Issues Certain security issues are sensitive data access data segregation Privacy bug exploitation recovery accountability, malicious insiders, management console security, account control, and multi-tenancy.

Cloud computing risk :

Cloud computing risk Cloud computing has "unique attributes that require risk assessment in areas such as data integrity, recovery, and privacy, and an evaluation of legal issues in areas such as e-discovery, regulatory compliance, and auditing,"

Cloud computing security concerns:

Cloud computing security concerns There are some of the security concern in this era.. Privileged user access Regulatory compliance Data location Data segregation Long-term viability. Investigative support

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