Stewart Butterfield

Planet Business: That’s not all, folks

Cash and stock deal is largest in cloud software industry

Irish tech firm recently laid off 39 staff including some in its operation here

Investors who took part in Slack’s $427m fundraising last year paid only $11.91 a share

There was a sense of realisation that perhaps the good guys aren’t really good guys after all

Web Summit attendees in Lisbon hear of potential risks from rise of artificial intelligence

Some 60,000 expected at event with Al Gore and Intel chief among keynote speakers

Chief executive says vested interests mean housing crisis won’t be solved any time soon

Messaging software company’s office set to be biggest outside of US headquarters

Tech firm set to increase Irish workforce by 80 and plans to employ 180 by end of 2017

Silicon Valley company with office in Dublin has 10,000 customers worldwide

IDA and Irish start-ups heading for prestigious event in Austin, Texas

Tech firm which has raised more than $300m wants to invest money to other start-ups

Stewart Butterfield’s messaging platform Slack is one of tech’s hottest properties