Start point: October/November 2007 ibm blue Cloud



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"A Cloud is a type of parallel and distributed system consisting of a collection of interconnected and virtualized computers that are dynamically provisioned and presented as one or more unified computing resources based on service-level agreements established through negotiation between the service provider and consumers” (Buyya et al.)

  • "A Cloud is a type of parallel and distributed system consisting of a collection of interconnected and virtualized computers that are dynamically provisioned and presented as one or more unified computing resources based on service-level agreements established through negotiation between the service provider and consumers” (Buyya et al.)

  • “A large-scale distributed computing paradigm that is driven by economies of scale, in which a pool of abstracted, virtualized, dynamically-scalable, managed computing power, storage, platforms, and services are delivered on demand to external customers over the Internet” (Foster et al.)

  • Start point: October/November 2007 - IBM Blue Cloud



http://www.ibm.com/ibm/cloud/

  • http://www.ibm.com/ibm/cloud/

  • « Values to customers include:

    • Reducing IT management complexity and skill requirements
    • Sharing resources among multiple applications
    • Accelerating application launches
    • Supporting both existing and emerging, data-intensive workloads
  • »



Compute Cloud EC2 (Elastic Cloud Computing)

  • Compute Cloud EC2 (Elastic Cloud Computing)

    • « Private » virtualized servers (« instances ») of different types
    • Example: High-CPU Extra Large Instance
      • 7 GB of memory
      • 20 EC2 Compute Units
      • 1690 GB Storage
      • Pricing on a per hour basis for each instance type: from $0.084/hour for the smallest "On-Demand" virtual machine running Linux to 12x more for the largest one running Windows (Nov. 2009). The data transfer charge ranges from $0.08 to $0.15 per gigabyte, depending volume
  • Data Cloud S3 (Simple Storage Service)

    • from $0.55 to $0.15 per GB-month, + bandwidth usage (from $0.08 to 0.15 per GB) + requests (from $0.01 to $0.1 per 1000 requests)
    • 102 billion objects stored files (March 2010)
    • data transfer is charged by TB / month data transfer, depending on the source and target of such transfer.


Infrastructure as a Service (IaaS)

  • Infrastructure as a Service (IaaS)

    • provides computing environments/infrastructure i.e., hardware, software
    • the provisioned infrastructure can dynamically scale up and down depending on the actual needs
    • Amazon EC2 and S3
  • Platform as a Service (PaaS)

    • high-level integrated environment to build and deploy applications
    • restrictions on the type of applications
    • but scalable platform
    • Google’s App Engine for deploying Web applications
  • Software as a Service (SaaS)

    • delivers software to consumers through the Internet
    • Salesforce: online CRM (Customer Relationship Management) Services ; Live Mesh from Microsoft: files and folders synchronization


From the customer point of view:

  • From the customer point of view:

    • Scalability
    • Reliability
    • Security and Privacy
    • Ubiquitous and fast access
    • Quality of Service
    • Service Level Agreement
    • Pricing system
    • Simple to use
  • From the internal point of view








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