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1、云计算的安全架构与技术-第1节,1,Introduction,Tsu-Yang Wu,云计算的安全架构与技术-第1节,2,What is Cloud Computing ?,Evolution of Information age,云计算的安全架构与技术-第1节,3,What is Cloud Computing ?,Lets hear from the “experts”,云计算的安全架构与技术-第1节,4,What is Cloud Computing ?,P. Mell & T. Grance, NIST, October, 2009 Effectively and Securely U
2、sing the Cloud Computing Paradigm Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable and reliable computing resources (e.g., networks, servers, storage, applications, services) can be rapidly provisioned and released with minimal consumer ma
3、nagement effort or service provider interaction.,云计算的安全架构与技术-第1节,5,What is Cloud Computing ?,Five essential characteristics On-demand self-service Ubiquitous network access Resource pooling Location independence Rapid elasticity Measured service,云计算的安全架构与技术-第1节,6,What is Cloud Computing ?,Rapid elas
4、ticity,云计算的安全架构与技术-第1节,7,What is Cloud Computing ?,Three service models三个服务模型 Cloud Software as a Service (SaaS)软件即服务 Use providers applications over a network. Cloud Platform as a Service (PaaS)平台即服务 Deploy customer-created applications to a cloud. Cloud Infrastructure as a Service (IaaS)基础设施即服务 Re
5、nt processing, storage, network capacity, and other fundamental computing resources.,云计算的安全架构与技术-第1节,8,What is Cloud Computing ?,Four deployment models Private cloud Enterprise owned or leased Public cloud Sold to the public, mega-scale infrastructure Hybrid cloud Composition of two or more clouds C
6、ommunity cloud Shared infrastructure for specific community,云计算的安全架构与技术-第1节,9,What is Cloud Computing ?,Open Cloud Manifesto, 2009, Group of organizations including IBM, Intel, and Google To propose practices for use in the provision of cloud computing services Open Cloud Manifesto Cloud computing i
7、s defined with a set of characteristics and value propositions.,云计算的安全架构与技术-第1节,10,What is Cloud Computing ?,The characteristics The ability to scale and provision computing power dynamically in a cost-efficient way. The ability of the consumer (end user, organization, or IT staff) to make the most
8、of that power without having to manage the underlying complexity of the technology. The cloud architecture itself can be private (hosted within an organizations firewall) or public (hosted on the Internet).,云计算的安全架构与技术-第1节,11,What is Cloud Computing ?,The value propositions Scalability on demand per
9、iods of time during which their computing resource needs are much higher or lower than normal Streamlining the data center buying and maintaining the hardware and software Improving business processes An organization and its suppliers and partners share data and applications in the cloud Minimizing
10、startup costs,云计算的安全架构与技术-第1节,12,What is Cloud Computing ?,The five defining characteristics of cloud computing Dave M. Surgient, ZDNet Dynamic computing infrastructure IT service-centric approach Self-service-based usage model Minimally or self-managed platform Consumption-based billing,云计算的安全架构与技术
11、-第1节,13,What is Cloud Computing ?,Origins of cloud computing,云计算的安全架构与技术-第1节,14,Relevant Technologies in Cloud Computing,云计算的安全架构与技术-第1节,15,Essential Characteristics,High-Scalability architecture The scalability of a cloud computing system ensures that the cloud can support increased load factors. F
12、or example, Amazons Provisioning Service exhibits high scalability by automatically scaling services in proportion to the load.,云计算的安全架构与技术-第1节,16,What is Cloud Computing ?,Cloud Services Examples S provides enterprise cloud computing services in 1999. Cloud computing services provided by Amazon Web
13、 Services in 2002. Elastic Compute Cloud (EC2) commercial services offered by Amazon to small companies and individuals whereby computing resources can be rented. Google offers Google Apps, which include Web applications such as Gmail, Docs, and Calendar.,云计算的安全架构与技术-第1节,17,What is Cloud Computing ?,Microsoft Azure Services Cloud Platform supports applications to be hosted and run at Microsoft data centers. VMware is a company that provides virtualization software for a variety of platforms. 阿里雲提供互联网基础设施服务 新浪云 云应用商店 新浪云平台（SAE） 新浪云计算企业服务,