Cloud computing Cloud Computing1. NIST: Five essential characteristics On-demand self-service Computing capabilities, disks are demanded over the network.

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Presentation transcript:

Cloud computing Cloud Computing1

NIST: Five essential characteristics On-demand self-service Computing capabilities, disks are demanded over the network (no human inter Broad network access Capabilites are available through networks using standard protocols. Used by thick or thin clients Resource pooling Computers are used by different users, depending on demand. Rapid elasticity Capabilities are provisioned and released as needed – fast. Measured service Control and optimize services Source: The NIST Definition of Cloud Computing NIST National Institute of Standards and Technology, USA Cloud Computing2

NIST: Service Models Software as a Services (SaaS) Consumer uses standard software from the cloud. Example: Google docs, Microsoft Office 365, etc. Platform as a Service (PaaS) Consumer uses standard operating system, network etc. from the cloud Consumer deploys proprietary application software to the cloud. Infrastructure as a Service (IaaS) Consumer uses computing power, disks, network etc. from the cloud Consumer deploys proprietary operations system + application software to the cloud Source: The NIST Definition of Cloud Computing pdf pdf Source: mputing mputing Cloud Computing3

NIST: Deployment Models Private cloud Cloud is used by a single organization. Owned and managed by the organization or a third party. Community cloud Cloud is used by a community of organizations With shared concerns: Security, etc. Public cloud Cloud is used by the general public Owned and managed by business, academic or government organization Hybrid cloud Combination of 2-3 of the above cloud models Source: The NIST Definition of Cloud Computing Cloud Computing4

Payment models Without cloud Buy hardware + software before you need it. You must pay before you earn. With cloud Pay for hardware + software as you need it (if you need it). Pay as you go You must pay as you earn. No upfront infrastructure costs Cloud Computing5

Hardware virtualization A physical machine (computer) is divided into a number of virtual machines. Virtual machines act like physical machines. Virtual machines can be opened, closed and even moved to another physical machine. Example virtualization software Oracle Virtual Box VMWare Microsoft Hyper-V Cloud Computing6

Some clouds Amazon 2006 Microsoft Azure 2008 Oracle Cloud 2012 Cloud Computing7