Cloud-based business phone systems: RingCentral Office is a complete, hosted phone and fax system that delivers powerful business phone functionality to all your employees. It is Expandable and Affordable.

Incremental Scalability
Agility
Reliability and Fault-Tolerance
Service-oriented
Los-Cost / Affordable
Security

Laptops/Netbooks, wireless access to the Web, and Cloud/SaaS provide a Ultra-Portable Business / Personal Computing Solution.

Microsoft My Phone works only on phones that run the Windows Mobile 6+ operating system
Back up phone information to a password-protected web site
Access and update your contacts and appointments on the web
Share photos with friends and family
How much does the Microsoft My Phone service cost? Free in Beta
How much data can I back up? – UPTO 200MB

Amazon’s Web Services (AWS) platform has provided companies of all sizes with an infrastructure web services platform in the cloud that is cost-effective, scalable, reliable and very extendable.