Facebook is building a new €200m data centre in Clonee, Co Meath.
Two thousand construction jobs will be created and it is expected around 150 jobs will be announced on a long-term basis once the centre is operational by the start of 2018 at the latest.
Facebook founder Mark Zuckerberg says it will be one of the most advanced and energy efficient data centres in the world.
He also said they are glad to be investing further in Ireland and the community in Clonee.
In a Facebook post, Mr Zuckerberg said: "One interesting engineering detail is that we’re cooling the facility with outdoor air, but because this is near the Irish Sea we’ll be using an indirect air cooling process to filter the salt from the air."