VANs are public networks that ad value to the basic communication provided by common carriers by offering specialized services such as access to commercial data bases,E-mail and video conferencing. BSNL broadband is an example of a VAN. VANs present an attraction for companies that exploit the benefits of telecommunication without any major investment. A value-added network (VAN) is a hosted service offering that acts as an intermediary between business partners sharing standards based or proprietary data via shared business processes. VANs traditionally transmitted data formatted as Electronic Data Interchange (EDI) but increasingly they also transmit data formatted as XML and Binary. VANs usually service a given vertical or industry and provide value-added services such as data transformation between formats (EDI↔XML, EDI↔EDI, etc.). At one extreme a VAN hosts only horizontal business-to-business (B2B) application integration services, hosting general-purpose integration services for any process or industry.