Google Apps is a service from Google providing independently customizable versions of several Google products under a custom domain name. It features several Web applications with similar functionality to traditional office suites, including: Gmail, Google Groups, Google Calendar, Talk, Docs and Sites.
Google Apps is free and offers the same amount of storage as regular Gmail accounts.Google Apps for Business, which offers additional e-mail storage, is available for an annual fee per user account. Google Apps for Education, which is free, combines features from the Standard and Premier editions.
An operating system (OS) is software, consisting of programs and data, that runs on computers, manages computer hardware resources, and provides common services for execution of various application software. The operating system is the most important type of system software in a computer system. Without an operating system, a user cannot run an application program on their computer, unless the application program is self booting
A virtual private network (VPN) is a method of computer networking--typically using the public internet--that allows users to privately share information between remote locations, or between a remote location and a business' home network. A VPN can provide secure information transport by authenticating users, and encrypting data to prevent unauthorized persons from reading the information transmitted.[ The VPN can be used to send any kind of network traffic securely.
