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A value-added service (VAS) is a term used in telecommunications to describe non-core features. This has traditionally referred to non-voice functions such as video, data and so on. However, as telecommunications services incorporate many of these functions now as standard, the term "value-added service" evolves to take on new meaning.
Value-added services are generally marketed as premium features and add-ons to basic core functions. Although they can often operate on a stand-alone basis, they are used by telecommunications companies in order to stimulate demand for core services. They are typically not intended to merely diversify the functionality of the product package, but instead provide operational and/or administrative synergy among its range of services. Value-added services are believed to benefit both customers and service providers, as they not only add product functionality for the end user, but also can source enhanced data and analytics for business use.