The second day of Web Summit gets underway in Dublin this morning.
Around 40,000 delegates are expected over the course of the event - which will be the last in Ireland before it moves to Lisbon from 2016.
Some delegates experienced problems with the wifi service yesterday, though there were no full outages.
Some of its 42,000 attendees took to Twitter to vent their frustration about the lack of connectivity and journalists from around the world
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A spokesperson for the Web Summit did later acknowledge some attendees were having wifi issues.
“The wifi at Web Summit this year is holding up,” the spokesman said. “It is obviously a huge technical challenge to deliver seamless wifi service at this scale.”
Connectivity was one of the issues Mr Cosgrave had raised when discussing the summit’s future with Taoiseach Enda Kenny before moving the conference to Lisbon.
For this year’s event, Web Summit took exclusive responsibility for the operation and performance of the wifi network.
Among the speakers were Dell founder Michael Dell, Facebook’s head of technology Mike Schroepfer, and American ambassador to Ireland Kevin O’Malley.
Speaking to the Irish Examiner, Mr O’Malley said the business relationship between Ireland and America was of major importance to US President Barack Obama.