The 2015 Web Summit begins today, with more than 30-thousand people expected at the RDS over the next three days.
Dell founder Michael Dell, Instagram founder Mike Krieger and President of Pixar & Disney animation Ed Catmull are among those attending.
They'll be joined by Stripe founder – Limerick man John Collison – and a host of other big names between now and Thursday.
This will be the last Web Summit in Ireland for the foreseeable future, with the event moving to Lisbon next year.