1, The full form of VAS is Value Added Services. It’s used on Business ,Business Terms in Worldwide

Value Added Services (VAS) is a term used in telecommunications industry for non-core services, ie all services beyond standard voice calls and Messaging Services. However, the term can be used in any service industry, for services available at little or no cost, to promote their primary business.

2, The full form of VAS is Virtual Address Space. It’s used on Computing ,Sofware & Applications in Worldwide

Virtual Address Space (VAS) is a memory mapping mechanism available in modern operating systems.

3, The full form of VAS is Sivas Nuri Demirag Airport. It’s used on Transport & Travel ,Airport Codes in Turkey

Sivas Nuri Demirag Airport (IATA: VAS, ICAO: LTAR) is an airport in Sivas, the city in mid Anatolian region of Turkey.

4, The full form of VAS is Visual Analogue Scale. It’s used on Medical ,Instruments & Equipment in Worldwide

A Visual Analogue Scale (VAS) is a measurement instrument that tries to
measure a characteristic or attitude that is believed to range across a continuum
of values and cannot easily be directly measured. For example, the amount of
pain that a patient feels ranges across a continuum from none to an extreme
amount of pain.