I haven't heard of them either, but this is apparently the third company they've acquired for more than a billion dollars this year. The others were Inteliquent

I haven't heard of them either, but this is apparently the third company they've acquired for more than a billion dollars this year. The others were Inteliquent for $1.1B in February and MessageMedia in June for $1.3B. https://investors.sinch.com/acquisitions https://investors.sinch.com/acquisitions