L5. public_cloud - Public cloud Lecture 1 Public cloud...

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Public cloud Cloud services Levels of cloud computing Positioning some players Business models Deployment models Selecting a cloud provider 1.1 Lecture 1 Public cloud EE4221 Cloud Computing Systems Oct. 22, 2015 Dr. Anna Ruokonen City University of Hong Kong
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Public cloud Cloud services Levels of cloud computing Positioning some players Business models Deployment models Selecting a cloud provider 1.2 Agenda . 1 Cloud services . 2 Levels of cloud computing . 3 Positioning some players . 4 Business models . 5 Deployment models . 6 Selecting a cloud provider
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Public cloud Cloud services Levels of cloud computing Positioning some players Business models Deployment models Selecting a cloud provider 1.3 What is cloud computing? Stefan Tai, Karlsruhe Institute of Technology: cloud computing provides scalable, network-centric, abstracted IT infrastructure, platforms, and applications as on-demand services that are billed by consumption. Three important viewpoints Business opportunities Faster time-to-market and cost efficient innovation processes Dynamically established open service and business networks Internet scale service computing Offering and using sophisticated platforms, infrastructure and business applications as modular (Web) services Efficient management and utilization of systems E.g. charging based on actual usage
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Public cloud Cloud services Levels of cloud computing Positioning some players Business models Deployment models Selecting a cloud provider 1.4 Cloud services
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Public cloud Cloud services Levels of cloud computing Positioning some players Business models Deployment models Selecting a cloud provider 1.5 E.g., Amazon Web Services global infrastructure
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Public cloud Cloud services Levels of cloud computing Positioning some players Business models Deployment models Selecting a cloud provider 1.6 Cloud computing characteristics According to NIST (National Institute of Standards and Technology), the key characteristics of cloud computing are: on-demand self-service, instant access to services, i.e. cloud computing is ready on-demand broad network access, Cloud computing requires broad network access and services are location (and device) independent Computing power is available to all kinds of (remote) clients through networking resource pooling, resources are shared among multiple users resource allocation is done by self services accessible to the end users; users can choose an amount of resources or a service level on which they operate.
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Public cloud Cloud services Levels of cloud computing Positioning some players Business models Deployment models Selecting a cloud provider 1.7 Cloud computing characteristics, cont. According to NIST the key characteristics are: (cont.) rapid elasticity and measured service Requires good scalability The amount of resources a user consumes can be changed rapidly Depending on the cloud architecture, the user can either reserve an amount of resources to be consumed or just consume the resources Measured services is a key element that allows a user to be
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