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E-commerce |
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Online goods and services |
Retail services |
Marketplace services |
Mobile commerce |
Customer service |
E-procurement |
Purchase-to-pay |
An online auction (or also electronic auction or e-auction or eAuction) is an auction which is held over the internet.[1][2][3] Like auctions in general, online auctions come in a variety of types like ascending English auctions, descending Dutch auctions, first-price sealed-bid, Vickrey auctions and others, which are sometimes not mutually exclusive.[4]
The scope and reach of these auctions have been propelled by the Internet to a level beyond what the initial purveyors had anticipated.[5] This is mainly because online auctions break down and remove the physical limitations of traditional auctions such as geography, presence, time, space, and a small target audience.[5] This influx in reachability has also made it easier to commit unlawful actions within an auction.[6] In 2002, online auctions were projected to account for 30% of all online e-commerce due to the rapid expansion of the popularity of the form of electronic commerce.[7] Online auctions include business to business (B2B), business to consumer (B2C), and consumer to consumer (C2C) auctions.[8]
The largest online auction site is eBay, which was the first to support person-to-person transactions.