Dublin-headquartered communications unifying firm Blueface is to merge with US hybrid cloud communications company Star2Star, with the merged entity becoming one of the top-five providers in the market.
The deal is understood to be valued at around $500m, with the new entity being headquartered in the United States.
The companies will retain their existing trading names in their markets, with a combined global workforce in excess of 500 people.
Star2Star CEO Norman Worthington will become Executive Chairman of Star2Star and Blueface, with current Blueface CEO Alan Foy also becoming CEO of Star2Star and Group CEO of StarBlue.
Mr Foy said the merger "represents a game-changing event in the unified communications as a service (UCaaS) landscape as it combines the best of proprietary UCaaS technology with an expansive geographic distribution, capability and reach".
He added: "For now, it is very much business as usual and there will be no change in branding or in the preservation of vital relationships with our partners and customers across our services in Star2Star and Blueface.
"In the not too distant future, we shall bring further enhanced innovation-led offerings across a full spectrum of products to our partners and customers and to the wider market which leverages the best of both companies’ capabilities and talent."
Blueface has been in existence since 2004 and has a presence in the Irish, European, and US markets.
The firm’s proprietary cloud voice platform services business customers of all sizes.
In March 2017 BDO Development Capital Fund announced a €10m investment in Blueface to accelerate its international expansion plans and, following the merger, the fund will exit the business.