Let us simplify this with a simple example: Gmail is a cloud service. Having said that, this doesn't mean that any service hosted on the web is a cloud service. Cloud Computing Services must have following 5 attributes:
---available everywhere i.e. uses Internet technologies, hassle-free, in most cases no installations/downloads etc.
---available on demand i.e. metered like your electric bills.
---can be accessed on any device i.e. device independent.
---Resource Sharing i.e Multi-Tenant (ability of the software to be offered to multiple users),
---Scalable %26amp; Elastic i.e. capacity can be sized up or sized down with in minutes, based on demand. Your business is growing you spin up more servers %26amp; pay only for whatever you use. Come recession %26amp; if your business is shrinking use less number of servers %26amp; pay less. This is as simple %26amp; quick as a simple configuration/settings. (No need to buy infrastructure which may lie idle/unproductive once your business doesn't require them)
A common user will use Cloud SaaS (Gmail, Dropbox etc). Developers %26amp; techies use Cloud IaaS (hosting infrastructure) %26amp; PaaS (development environment).What is cloud computing?
Vidie in today's on the go away from the office it is the virtual office and what is required to support an away or remote operation to and with the main offices computer system. At one time it was simply VPN but I guess that was not enough.
The office I work from has a cloud based phone PBX system meaning that it is completely internet based.
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