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A pc on every desk. A big mistake.
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A pc on every desk. A big mistake.


A PC is a too complex architecture to be given to every users. A “pc on every desk” probably was one of the biggest mistakes in the information technology era.

A PC is a too complex architecture to be given to every users. A “pc on every desk” probably was one of the biggest mistakes in the information technology era.

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  • 1. A PC on every desk Probably, one of the biggest error in the information technology era Smaller footprint, same 1 complexity
  • 2. PC: a downsized mainframe  Same Von Neumann architecture: ALU, registries, memory, I/O, interrupts, HD, other devices  Same pile of sftw stacks: microcode, OS, drivers, system services, DB, applications  Together with: o The difficulty, for a typical user, to run, administer, maintain and fine tune the system 2
  • 3. User. Not a system engineer  Typical user doesn’t - and must not - have the expertise necessary for everyday maintenance of his “working tool” 3
  • 4. Maintenance schedule Best practices for a healthy PC (at least once in a week) o Run antivirus & spyware removal tools o Install the latest updates o Backup the entire system o Encrypt confidential data o Check for errors and backup your local mailbox file o Run utilities to check for dangerous problem like the “rootkit” infection o Check for unwanted applications/services that eat system resources o Check the hard disk for volume errors o Continue ….. 4
  • 5. Is Windows faulty ? No, but:  The more the third party applications you add to the systems the more it becomes fragile and prone to crashes.  Like any complex architecture it requires an accurate and constant maintenance  Internet can be a dangerous source of, virus, spyware, malaware, ecc  Many users downloads and install uncertified and untested applications from the web It was not designed to be a “closed” platform centrally managed by a team of expert 5
  • 6. The solution ? 6
  • 7. Time machine: back to 80s What would have happened in a real world Geek Open platform User Closed & specialized platform 7
  • 8. Back to the future “Closed” Cloud Midrange SaaS devices: computing systems applications iPad 8
  • 9. Cloud Computing  Put back the platform's management issues in the hands of the experts  OPEX: pay per use  SLA: support & maintenance fees are based on the reliability index needed  Platform-free clients: any combination of hardware & software able to run a web browser 9
  • 10. Midrange systems  Kind of “private cloud”  Ideal solution for “single-server” companies  Centralized model  Bring back the complexity into the “computer room”  No more “personal” workstations  End of company data stored on users’ disks  Low-TCO terminals  SOA approach to integrate third party “SaaS” solutions 10
  • 11. Legacy UI (User Interface)  Too often the wrong reason behind the abandon of a midrange reliable system  Modern tools allows easy UI to GUI mapping  Not always a modern GUI is the right choice o 5250-UI is still the fastest way for data-entry operators  Multi-touch screens, hand-gestures or eye- movements recognition devices can be easily “connected” using SOA Web Services to access the Business Logic components. 11
  • 12. The one-size-fits-all model doesn’t apply Midrange Server
  • 13. iPad  Closed platform o Runs only certified applications  Almost whatever could be a source of problems has been removed by design  Easy to use  Geeks hate it  Keegs (opposite of Geek) love it 13
  • 14. SaaS applications Google Docs - Office Live  All you needs is a browser  Data are stored “somewhere” in the Cloud o Accessible everywhere from any device 14
  • 15. Slim OSs Chrome OS, iPhone OS, Windows EC 7, Ubuntu light, ecc  New Operating Systems designed to work exclusively with Web Applications  Google Chromoting o Chrome OS extension to run "legacy PC applications" right in the browser Services Present OS Browser Light OS Services Browser 15
  • 16. 16 June 2010