Cloud computing

Cloud computing

1. This is when a computer uses services provided by another organisation's computer systems. Well known hosting companies that provide cloud services are: Microsoft, Amazon, Google and Rackspace.

2. Cloud storage is related to cloud computing and is where only the hosting company provides the storage, access and retrieval facilities.

   • COST and CONEVNIENCE
     • You only pay for the storage that you have used. You don't have to provide and maintain the hardware locally.
   • AVAILABILITY
     • Data and files may be available anywhere in the world where there is an internet connection
   • RELIABILITY OF THE NETWORK
     • You need to be able to get through to the host to access and process data.
   • SECURITY OF DATA
     • As the files are being stored by the host, you have no control over them. You need to be aware of their security terms and policies.

3. UBIQUITOUS- existing everywhere

   • UBIQUITOUS COMPUTER SYSTEMS Processors can be imbedded in any device including clothing, appliances, vehicles and people to connect them to the internet so that the data generated by the processors will be readily available.
   • >Computer systems in place that monitor shelf and ware house stock. >When stick reaches a certain minimum level, an order is automatically made with the appropriate supplier electronically. >Tills feed product sales to a central computer, which them calculates present stock.
     • FUTURISTIC: > A car that can inform the owner when it needs servicing, book itself into a garage and place orders for any parts needed. >Refrigerator that can monitor contents, compile an order as food is used and add items to the user's online shopping account.

4. RFID- RADIO FREQUENCY IDENTIFICATION

   • it is wireless non-contact system, uses radio waves to transfer data to an object or person. It is used for automatic identification and tracking e.g. cat flaps that only open for the animal that has the correct chip.