Microsoft dominates the UCaaS market, but challengers dog its heels.
As Microsoft holds its annual Ignite enterprise user conference in San Francisco, I thought it would be a good time to look at where Microsoft Teams sits today, and how its competitors continue to carve out their own space in the crowded unified communications as a service (UCaaS) market.
The Good
Microsoft continues holding an impressive chunk of the UCaaS market, which we define as including, at a minimum, PSTN calling, meetings, and messaging. Metrigy’s annual Workplace Collaboration MetriCast: 2025 global study of almost 800 companies shows that of the more than 90% of companies now using UCaaS, Microsoft is the #1 installed provider at 20.6%.
Microsoft’s strength is even more impressive when you look at the list of providers under consideration by those considering a change: Nearly half (47.4%) are evaluating Microsoft, slightly ahead of the 46.4% evaluating Cisco. With companies in our study typically evaluating replacement providers every two years, Microsoft is well-positioned to continue to grow market share if it can win among those considering it.
The Bad
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