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Voice over IP (VOIP) 

Voice data are transferred across 

the Internet – it enables phone calls to be made over the 

Internet.

W

 Walk-  through 

A user executes their actions through 

using a system or  mock-  up.

Web 2.0 concept 

Web 2.0 refers to a collection of web 

services which facilitate certain behaviours online such 

as community participation and  user-  generated content, 

rating and tagging.

Web 3.0 concept 

 Next-  generation  web  incorporating 

 high-  speed  connectivity,  complex   cross-  community 

interactions, full range of digital media (text, voice, video) 

and an intelligent or semantic web where automated 

applications can access data from different online services 

to assist searchers perform complex tasks of supplier 

selection.