Unify Square, a US-based software developer for professional conference call service Skype for Business, closed a series B round featuring computing company Microsoft at $12.2m yesterday.
The company closed the first tranche of the round at $8.2m in February this year, securing funding from Microsoft, Unify Square chairman Geoff Baldwin and assorted angel investors.
Microsoft, Bridge Bank and Stanford University, as well as a range of unnamed existing investors have now added an extra $4m to close the round.
Unify Square markets tools for Microsoft Lync, which is in the process of being rebranded as Skype for Business. Its services include data analytics software that tracks call quality and employee satisfaction surveys.
The company has raised approximately $26.2m in equity funding and debt financing. It intends to use the series B capital to further develop its software.