The main goal of this paper is to show how the Delphi method works as a management tool when an initiative is planned to be developed and commercialized. The paper also provides insights how thin computing and open source can affect the future IT infrastructure development. The primary data was collected in a three round Delphi study. The chosen Delphi panellists' consist of the following interest groups: 1) Developers of open source thin computing, 2) Industrial experts, 3) Representatives of academic institutes. Results reveal that open source thin computing represents a promising alternative in the IT infrastructure development. The Delphi method represents a workable research tool in technology management field to capture multifaceted and enriched view about industry evolution.