UC&C Market Leaders

Cisco Total Market Share: 15 Percent

Microsoft Total Market Share: 12.5 Percent

IBM Total Market Share: 4 Percent

The San Jose, Calif.-based networking giant captured just over 15 percent of the total market share in the fourth quarter, representing approximately $1.35 billion in revenue. Cisco’s total market share increased for the third consecutive quarter, according to Duke. "Cisco has many years under its belt in selling to the UC collaboration market with an established set of products, as well as emerging cloud solutions," Duke said.

Redmond, Wash.-based Microsoft nabbed 12.5 percent of the total market share, around $1.12 billion in revenue during the quarter. "We're keeping watch on market adoption of Microsoft Skype for Business. Given the large subscriber base Microsoft enjoys with Office 365, the potential for Microsoft to outgrow any competitor is a real possibility," said Duke.