The four-year framework agreement covers the provision of a venue finding and booking service for conferencing, training courses, and meetings at locations throughout the UK.
The framework will be used by local authorities including Surrey County Council, Hampshire County Council, Southampton City Council, and the Isle of Wight Council.
Other authorities to use the framework include Hampshire Constabulary, members of the Central Buying Consortium, the South East 7 Group, and Hampshire and Isle of Wight Procurement Partnership.
Valued at around £1.5m over its four-year life, the contract will run to the end of 2016.
Eight businesses tendered for the work, which was previously run by Conference Care.
Hampshire County Council procurement manager Peter Lloyd said: "NYS Corporate offered us the best value of all the tenders we received."