An Introduction to SaaS and Cloud Computing

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  • Sometimes called Utility computing
  • Sometimes called Utility computing
  • Sometimes called Utility computing
  • An Introduction to SaaS and Cloud Computing

    1. 1. An Introduction to SaaS and Cloud Computing Ross Cooney
    2. 2. The hype Cluster Computing Cloud Computing Grid Computing 
    3. 3. What is the cloud ? <ul><li>IT as a service </li></ul><ul><li>Cloud allows access to services without user technical knowledge or control of supporting infrastructure </li></ul><ul><li>Best described in terms of what happened to mechanical power over 100 yrs ago </li></ul><ul><li>Now computers are simple devices connected to the larger cloud </li></ul><ul><li>Data processing, storage and software applications that used to run locally are now being supplied by big central computing stations. They're becoming, in essence, computing utilities. </li></ul>What is Cloud Computing?
    4. 4. IaaS Infrastructure as a Service PaaS Platform as a Service SaaS Software as a Service
    5. 5. SaaS Software as a Service
    6. 6. <ul><li>Software delivery model </li></ul><ul><li>Increasingly popular with SMEs </li></ul><ul><li>No hardware or software to manage </li></ul><ul><li>Service delivered through a browser </li></ul>SaaS
    7. 7. <ul><li>Advantages </li></ul><ul><li>Pay per use </li></ul><ul><li>Instant Scalability </li></ul><ul><li>Security </li></ul><ul><li>Reliability </li></ul><ul><li>APIs </li></ul>SaaS
    8. 8. <ul><li>Examples </li></ul><ul><li>CRM </li></ul><ul><li>Financial Planning </li></ul><ul><li>Human Resources </li></ul><ul><li>Word processing </li></ul><ul><li>Commercial Services: </li></ul><ul><li>Salesforce.com </li></ul><ul><li>emailcloud </li></ul>SaaS
    9. 9. PaaS Platform as a Service
    10. 10. <ul><li>Platform delivery model </li></ul><ul><li>Platforms are built upon Infrastructure, which is expensive </li></ul><ul><li>Estimating demand is not a science! </li></ul><ul><li>Platform management is not fun! </li></ul>PaaS
    11. 11. <ul><li>Popular services </li></ul><ul><li>Storage </li></ul><ul><li>Database </li></ul><ul><li>Scalability </li></ul>PaaS
    12. 12. <ul><li>Advantages </li></ul><ul><li>Pay per use </li></ul><ul><li>Instant Scalability </li></ul><ul><li>Security </li></ul><ul><li>Reliability </li></ul><ul><li>APIs </li></ul>PaaS
    13. 13. <ul><li>Examples </li></ul><ul><li>Google App Engine </li></ul><ul><li>Mosso </li></ul><ul><li>AWS: S3 </li></ul>PaaS
    14. 14. IaaS Infrastructure as a Service
    15. 15. <ul><li>Computer infrastructure delivery model </li></ul><ul><li>Access to infrastructure stack: </li></ul><ul><ul><li>Full OS access </li></ul></ul><ul><ul><li>Firewalls </li></ul></ul><ul><ul><li>Routers </li></ul></ul><ul><ul><li>Load balancing </li></ul></ul>IaaS
    16. 16. <ul><li>Advantages </li></ul><ul><li>Pay per use </li></ul><ul><li>Instant Scalability </li></ul><ul><li>Security </li></ul><ul><li>Reliability </li></ul><ul><li>APIs </li></ul>IaaS
    17. 17. <ul><li>Examples </li></ul><ul><li>Flexiscale </li></ul><ul><li>AWS: EC2 </li></ul>IaaS
    18. 18. IaaS Infrastructure as a Service PaaS Platform as a Service SaaS Software as a Service
    19. 19. <ul><li>Common Factors </li></ul><ul><li>Pay per use </li></ul><ul><li>Instant Scalability </li></ul><ul><li>Security </li></ul><ul><li>Reliability </li></ul><ul><li>APIs </li></ul>IaaS PaaS SaaS
    20. 20. <ul><li>Advantages </li></ul><ul><li>Lower cost of ownership </li></ul><ul><li>Reduce infrastructure management responsibility </li></ul><ul><li>Allow for unexpected resource loads </li></ul><ul><li>Faster application rollout </li></ul>IaaS PaaS SaaS
    21. 21. <ul><li>Cloud Economics </li></ul><ul><li>Multi-tenented </li></ul><ul><li>Virtualisation lowers costs by increasing utilisation </li></ul><ul><li>Economies of scale afforded by technology </li></ul><ul><li>Automated update policy </li></ul>IaaS PaaS SaaS
    22. 22. <ul><li>Risks </li></ul><ul><li>Security </li></ul><ul><li>Downtime </li></ul><ul><li>Access </li></ul><ul><li>Dependency </li></ul><ul><li>Interoperability </li></ul>IaaS PaaS SaaS

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