8X8, Vonage take hold of UCaaS market, says research firm

8X8 is holding its status as the unified communications as a service (UCaaS) market through its dominant position with small businesses and a growing presence in medium and large businesses. "8x8 maintains its leadership due to its large installed base of UCaaS seats, financial position and continued execution on its market strategy," said Diane Myers, senior research director for VoIP, UC and IMS at IHS Technology.

Although 8X8 and fellow UCaaS provider Vonage have seen consistent performance in recent years, the rankings have shifted. One of the key drivers in raising the profile on the UCaaS scorecard has been acquisitions, something that was a clear factor of what helped Vonage jump to the second spot. In 2015, Vonage made two key UCaaS acquisitions -- Simple Signal and iCore Networks -- giving it greater scale and capabilities. RingCentral, which commands the largest UCaaS installed base, came in just below West to claim fourth place. Meanwhile, privately held UCaaS service provider Nextiva made its first showing on the Scorecard, making the top 10 thanks to its installed base of seats. Outside the top 10 were Comcast, ShoreTel, Cox, CoreDial and Windstream. Release