Although the airline's passenger reservations, departure control and cargo management applications have been based on Unisys software for more than 20 years, they are currently hosted in an IBM datacentre in the Sydney suburb of North Ryde.
The airline last year asked vendors to respond to a tender for the hosting of those applications, eventually awarding the work to Unisys over other bids that could have seen the work move out of Australia.
The new contract will see Unisys take over the hosting work in the second half of this year, and expand the support it has provided to Cathay for the past nine years.
Expanded services Unisys will provide include management of middleware applications and the migration from legacy communications handlers to a Unisys Online Message Switching Engine.
Announcing the deal today, Unisys Asia-Pacific general manager of outsourcing and infrastructure services, Mike Ettling, declined to reveal which other vendors had competed for the hosting contract. However he said the three-year deal was worth tens of millions of dollars and could be extended for an additional two years.