Electronic markets and electronic hierarchies
Communications of the ACM
Market provision of custom software: learning effects and low balling
Management Science
ICIS '99 Proceedings of the 20th international conference on Information Systems
Costly Bidding in Online Markets for IT Services
Management Science
Managing Online Auctions: Current Business and Research Issues
Management Science
Note on Online Auctions with Costly Bid Evaluation
Management Science
Journal of Management Information Systems - Special section: Strategic and competitive information systems
Information technology, incentives, and the optimal number of suppliers
Journal of Management Information Systems - Special section: Strategic and competitive information systems
Yield management of workforce for IT service providers
Decision Support Systems
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Most studies on the role of IT for economic exchange predicted that under a given set of exchange attributes buyers would choose a certain mode of relationship with suppliers. Our study of an online IT services marketplace revealed that buyers do not have a single, uniformly preferred type of relationship, but rather maintain a portfolio of relationships. Furthermore, different buyers arrange their portfolios of exchange relationships in different ways. We found four clusters of buyers' portfolios of relationships labeled Transactional buyers, Recurrent buyers, Small diversifiers and Large diversifiers, that differ in their usage of auction or negotiation mechanism, their supplier relations as well as their usage of preferred suppliers. Our results thus paint a richer picture of how buyers organize their supplier networks online.