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Introduction To Cloud Computing

Introduction To Cloud Computing






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  • Aim here is to set the scene for costs of maintaining an infrastructure ?Raise areas such as cost of infastructureHow is a new application server addedHow is capacity planned ?What utilisation do training rooms getHow is new software installedHow is software updatedetc
  • Aim is to get them thinking along the lines that traditional computing structures are actually chaoticAnd inefficent. E.g, procurement of a new server. Needs to be purchased software installed, installed on company network etc

Introduction To Cloud Computing Introduction To Cloud Computing Presentation Transcript

  • Introduction to Cloud Computing
  • Objectives
    In this overview we will:
    Discuss Cloud Computing Benefits and Adoption
    Define Cloud Computing
    Introduce the Architecture of the Cloud
    Demonstrate a common Cloud usage scenario
  • Introduction to Cloud Computing
    Business Computer Systems
    Defining Cloud Computing
    Delivering Cloud Services
    Cloud Deployment Models
  • Business Computer Systems
    Data center
    Training room
    Sales office
    Software development
  • Business Computer Systems(continued)
    Typical organisation computing infrastructure built from
    Application servers
    Host variety of business applications
    Database servers
    Persist organisational data
    Interconnect systems
    Internet access
    For email, Internet etc
    Client to server hosted applications
    Host productivity tools e.g. Word
    Remote access to company infrastructure
  • Maintaining a Business Computer Infrastructure
    Every business depends on computing
    Raises a number of questions: technical, business and administrative
    How are new applications purchased ?
    How are new applications installed for users ?
    How are existing applications updated ?
    How are new server machines procured and installed ?
    How is server and network capacity planned ?
    What utilization does the training room facility get ?
    Who is responsible for system and application security ?
  • Cloud Computing:An Alternative to Traditional Datacenters
    “Let me be very clear here:
    I really don’t want to operate data centers anymore...
    We’d rather spend our time giving our customers great service and
    writing great software rather than managing physical hardware”
    Don MacAskill, CEO, SmugMug (http://www.smugmug.com)
  • Cloud Computing Benefits
    Pay-as-you-go Model
    Operational Expense instead of Capital Expense (OpEx vs. CapEx)
    Virtualization of Hardware
    Development Efficiencies
    Self-service provisioning model
    API driven
    Rapid deployment
    High demand “Elasticity”
    Rapidly Scalable
  • Cloud Computing Adoption
    Source: Sun Microsystems, Inc.
  • Introduction to Cloud Computing
    Business Computer Systems
    Defining Cloud Computing
    Delivering Cloud Services
    Cloud Deployment Models
  • What is Cloud Computing ?
    There are many definitions of cloud computing
    The one we will use is:
    Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction. This cloud model promotes availability and is composed of five essential characteristics, three service models, and four deployment models.*
    * Source: The NIST Definition of Cloud Computing Version 15, 10-07-2009
  • Essential Characteristics
    On-demand self-service. A consumer can unilaterally provision computing capabilities, such as server time and network storage, as needed automatically without requiring human interaction with each service’s provider.
    Broad network access. Capabilities are available over the network and accessed through standard mechanisms that promote use by heterogeneous thin or thick client platforms (e.g., mobile phones, laptops, and PDAs).
    Resource pooling. The provider’s computing resources are pooled to serve multiple consumers using a multi-tenant model, with different physical and virtual resources dynamically assigned and reassigned according to consumer demand. There is a sense of location independence in that the customer generally has no control or knowledge over the exact location of the provided resources but may be able to specify location at a higher level of abstraction (e.g., country, state, or datacenter). Examples of resources include storage, processing, memory, network bandwidth, and virtual machines.
  • Essential Characteristics(Continued)
    Rapid elasticity. Capabilities can be rapidly and elastically provisioned, in some cases automatically, to quickly scale out and rapidly released to quickly scale in. To the consumer, the capabilities available for provisioning often appear to be unlimited and can be purchased in any quantity at any time.
    Measured Service. Cloud systems automatically control and optimize resource use by leveraging a metering capability at some level of abstraction appropriate to the type of service (e.g., storage, processing, bandwidth, and active user accounts). Resource usage can be monitored, controlled, and reported providing transparency for both the provider and consumer of the utilized service.
  • Introduction to Cloud Computing
    Business Computer Systems
    Defining Cloud Computing
    Delivering Cloud Services
    Deployment Models
  • Cloud Services Delivery Model
    Framework for describing cloud computing services known as SPI
    Acronym for the three major services provided by the cloud
    Software as a Service (SaaS)
    Platform as a Service (PaaS)
    Infrastructure as a Service (IaaS)
    Software as a Service
    Platform as a Service
    Infrastructure as a Service
  • Software as a Service (SaaS)
    Business applications hosted by the provider and delivered as a service
    Delivery model provides a number of advantages:
    Pay per-use, no up front purchase costs
    Receive latest updates transparently
    No in-house administration/installation costs
    Many SaaS vendors have provided products
    Most famous SaaS example is Salesforce.com
    Customer relationship management software
    Google applications
    Google docs
    Google calendar
  • Platform as a Service (PaaS)
    Computing platform that includes a software for
    Enables organisations to concentrate on application development
    No need to worry about setting up physical testing or production machines
    Simple productive, cost effective solution
    Major benefits include:
    Easy to use
    Automatic scalability
    Reliability, performance and security of major providers e.g. Google,Microsoft
    Cost efficient
    Free trial periods
  • PaaS Examples
    Google Application Engine
    Provides tools and development stack for Python and Java
    Development tool support– plugin for Eclipse (OpenSource IDE)
    Data storage services available
    Application automatically scaled
    Free for 500MB storage and 5 million page views per month
    Microsoft Azure
    Provides Windows Azure operating system
    Development tool support for Visual Studio
    Data storage services plus much more
    Runs on a virtual machine
    Provides development platform for custom applications
    Applications rapidly built using Force.com tools
  • Infrastructure as a Service (IaaS)
    Resources are delivered as a service
    Including servers, networks, memory, CPU etc
    Based on virtualization of machines
    Many vendor offerings
    Amazon Elastic Compute Cloud (EC2)
    Eucalyptus – open source cloud platform
    Used for private clouds
    Key feature of IaaS is instant provisioning
    New machine instances created on demand within minutes
    Made available on virtual networks
  • IaaS Examples
    Amazon EC2
    Amazon provides a set of machine images
    Supports various operating systems
    Windows, Unix, Linux
    Allows provisioning of high memory or high CPU image instances
    Multiple application stacks available on pre-packaged machine images
    Various application servers: JBoss, Weblogic, Websphere
    Various databases: MySql, SQL server, DB2
    Developers plugin for Eclipse
    Various other services available
    Storage service
    Message service
    We will examine Amazon EC2
    in the demo
  • Two Additional Concepts
    Virtual Machine Images
    Complete, pre-configured, image of application and OS
    Pre-packaged or built by user
    Cloud APIs
    Programmatic way to provision and manage compute, storage, and network resources
    Access to scalable services (S3, SimpleDB)
    Work underway to standardize for interoperability
  • Introduction to Cloud Computing
    Business Computer Systems
    Defining Cloud Computing
    Delivering Cloud Services
    Deployment Models
  • Cloud Deployment Models
    Organizations have a choice of deployment models:
    Private cloud. The cloud infrastructure is operated solely for an organization. It may be managed by the organization or a third party and may exist on premise or off premise.
    Community cloud.A variant of the Private cloud. The cloud infrastructure is shared by several organizations and supports a specific community that has shared concerns (e.g., mission, security requirements, policy, and compliance considerations). It may be managed by the organizations or a third party and may exist on premise or off premise.
    Public cloud. The cloud infrastructure is made available to the general public or a large industry group and is owned by an organization selling cloud services.
    Hybrid cloud. The cloud infrastructure is a composition of two or more clouds (private, community, or public) that remain unique entities but are bound together by standardized or proprietary technology that enables data and application portability (e.g., cloud bursting for load-balancing between clouds).
  • Private Clouds
    Emulate public cloud on private networks
    Deliver benefits of cloud computing
    Minimise pitfalls
    Data security
    Corporate governance
    Network, computing and storage is dedicated to single organisation
    Not shared with other organisations like a public cloud
    Easier to comply with corporate security standards, policies and regulatory compliance
  • Private Clouds(continued)
    Variety of private cloud patterns
    Hosted within customer owned data center
    Operated by internal IT department
    Located, owned managed by third party according to SLA
    Owned by customer, managed by vendor
  • Public Clouds
    Owned by third party vendor
    Host, operate and manage services
    Security management provided
    Service offered to multiple customers
    Resources dynamically provisioned on a self-service, pay as you use basis
    Public cloud
  • Hybrid Clouds
    Mixture of public and private clouds
    Core applications and sensitive data in-house
    Non-core applications in a public cloud
    Hybrid cloud
    Private cloud
    Public cloud
  • Introduction to Cloud Computing
    Business Computer Systems
    Defining Cloud Computing
    Delivering Cloud Services
    Deployment Models
  • DemoAmazon EC2
  • Summary
    In this overview we have:
    Discussed Cloud Computing Benefits and Adoption
    Defined Cloud Computing
    Introduced the Architecture of the Cloud
    Demonstrated a common Cloud usage scenario