A year ago, Gartner predicted a rapid shift away from specialist telephony platforms. By 2028, it said, 90% of organisations would run enterprise calling through their existing cloud office or collaboration tools instead. Its newly published 2026 Magic Quadrant for Unified Communications as a Service, dated 28 July, tells a more cautious story. That same 2028 figure has been revised down to 70%, a twenty-point retreat on a forecast that was barely a year old.
The vendor landscape, by contrast, looks settled. Cisco, Microsoft, RingCentral and Zoom hold onto their Leader positions, exactly as they did in Gartner’s 2025 UCaaS Magic Quadrant. 8×8, Dialpad and GoTo remain Visionaries. Vonage and Wildix stay put as Niche Players, and no vendor qualifies as a Challenger this year. The clearest sign of movement is what’s missing. Google and Sangoma, both rated Niche Players twelve months ago, have dropped out entirely. That shrinks the field from eleven providers to nine.
Gartner’s 2026 UCaaS Magic Quadrant Keeps the Same Four Leaders in Place
The four Leaders haven’t changed. Their own announcements about it, in several cases, haven’t changed much either.
Cisco Runs It Back, Almost Word for Word
Amit Barave, Cisco’s VP and general manager for Webex Suite and AI, credited this year’s Leader placement, Cisco’s eighth in a row, to “our unwavering vision and proven ability to execute.” Cisco used almost the same wording last year, when it announced its seventh consecutive year as a Leader. The framing changes less than almost anything else in this report.
The substance behind it has moved on, at least on paper. Cisco points to AI Assistant adoption in meetings growing ninefold over the past eleven months. It also highlights newly generally available Cisco AI PODs, which run transcription and summarisation fully on-premises or air-gapped.
Gartner’s own assessment is less effusive. It still describes Webex as a platform IT administrators favour more than end users do. It also flags that Cisco caps its financial remedies for Webex Calling outages at 5% of the monthly service fee, a threshold it suggests may fall short for large enterprises with strict reliability demands.
Microsoft’s Copilot Licensing Remains the Sticking Point
Little separates this year’s Microsoft evaluation from last year’s. Teams remains the default choice for organisations already embedded in its ecosystem, helped by Direct Routing and Operator Connect availability in more than 60 countries and bring-your-own-carrier options across North America and Europe.
The same friction point recurs, though. Copilot has been extended with unified Copilot Chat and dedicated Facilitator and Interpreter agents, but it still sits outside standard UCaaS licensing and carries its own cost. Gartner calls it a potentially expensive add-on for organisations chasing Microsoft’s full AI capability set. A new integration, Teams Phone Unify, connects Teams, Dynamics 365 Contact Center and third-party telephony partners, and is this year’s answer to Teams’ long-running lack of a native contact centre.
RingCentral Keeps Counting the Years
RingCentral has built an entire announcement genre around counting. Eighth consecutive year in 2022. Ninth in 2023. Tenth in 2024. Eleventh in 2025. A twelfth-year headline this time would be a safe bet.
Behind the ritual, Gartner’s assessment has actually sharpened. This year’s evaluation puts a number on RingCentral’s integration marketplace for the first time: close to 600 prebuilt integrations. It also credits AIR Pro, a new agentic tool for task execution across voice and digital channels. But the pricing caution has sharpened too. Gartner now states plainly that RingCentral’s pricing for midlevel knowledge workers sits above the market average, with several advanced features gated behind paid add-ons.
Zoom’s Own Announcement Undercuts Gartner’s Caution About Zoom
Shawn Rolin, general manager of Zoom Workplace and AI, marked Zoom’s seventh consecutive year as a Leader by framing ZoomMate as proof the company has moved beyond a communications tool into what it calls a system of action:
“Real work doesn’t happen in isolated apps, it happens through conversations.”
Gartner’s own evaluation, published in the same cycle, reads rather differently. It warns that customers using Zoom mainly for meetings may find its expanding functionality adds complexity, a concern now specifically framed as an inconsistent AI experience. It also flags a pattern of frequent licensing and bundling changes that has left renewing customers facing higher costs and shifting entitlements. Zoom’s direct licence to sell cloud UC products with calling plans in India remains a genuine differentiator, but the gap between the vendor’s own framing and Gartner’s is wide enough to be worth noting.
Why Gartner Cut Its Cloud Telephony Forecast for 2028
This year’s report leans more heavily on geopolitical tension and data sovereignty requirements as slowing forces, particularly across Canada, Europe and parts of the Asia/Pacific region, in regulated markets and government sectors.
That’s a sharper framing than last year. Back then, regional friction was discussed mainly in terms of Microsoft’s reach into what Gartner called cloud-difficult regions, rather than as a drag on the wider market.
The report also attaches new figures to telephony rightsizing. Enterprises are cutting their telephony footprint by roughly 10% to 50% of their user base. Gartner now expects traditional telephony spend to fall 40% by 2029 against 2026 levels.
AI and consumption-based UCaaS capabilities tell the opposite story. They’re projected to grow from just 5% of overall UCaaS spend in 2026 to 30% by 2029. The retreat from legacy telephony is real, then, but slower and more uneven than Gartner predicted a year ago. Spending, meanwhile, is concentrating harder around AI-driven capability.
Google and Sangoma Drop Out as the Vendor Field Narrows to Nine
Gartner’s qualifying bar for this report is steep. Vendors need a minimum of $110 million in yearly UCaaS recurring revenue, at least one million paying users holding telephony entitlements, and 75 or more directly employed sales and support staff across at least two of the report’s four defined regions.
Google and Sangoma’s exit from a field that numbered eleven vendors last year suggests one or both no longer clears that threshold. The report itself doesn’t spell out which specific criterion tripped them up.
Vonage and Wildix are left to carry the Niche Player tier alone. Vonage’s differentiator is VBC Lite for Teams, which lets customers place calls natively inside Microsoft Teams without a separate Microsoft Phone licence. Gartner credits the move for cost efficiency, but still rates Vonage’s AI capabilities as behind the market and its collaboration feature set thinner than more meetings-focused rivals.
Wildix stands out for a different reason. More than half of its customer base sits on month-to-month contracts, an unusually flexible arrangement Gartner says limits vendor lock-in. The company is still widely seen as telephony-first, though, with limited traction among large enterprises.
Visionaries 8×8, Dialpad and GoTo Run the Same Playbook on a Smaller Stage
8×8 has been playing the consecutive-year game even longer than RingCentral, claimed its fourteenth consecutive year in 2025. This year’s substance behind the milestone is 8×8 AI Studio, a new agentic tool spanning voice and digital channels, plus the Sipsynergy acquisition to strengthen its Microsoft Teams integration.
For vendors like Dialpad and GoTo, incremental features arrive dressed in AI language, then get measured by Gartner against much more specific gaps. Dialpad added failover for call queues, automatic meeting translation and breakout room support, but still lacks an AI receptionist product and native APIs for third-party contact centre integrations. GoTo expanded its AI Receptionist with new scheduling and multilingual support, building on real strength in automotive and small healthcare deployments, while its limited application marketplace and inconsistent postsales support remain flagged as weak points.
What the Forecast Downgrade Signals for UCaaS Buyers
This year’s Magic Quadrant doesn’t change who’s winning, and the vendors’ own announcements won’t tell buyers that either. Every Leader is running some version of the script it ran last year, dressed in newer AI language. What’s actually moved is Gartner’s own confidence in how fast the market is changing: a 2028 cloud telephony forecast cut by twenty points in a single year, a narrower field of qualifying vendors, and an acknowledged gap between how much AI capability vendors are shipping and how ready enterprises are to use it.
For buyers, that argues for reading vendor announcements as marketing rather than evidence. This year’s placements are a starting point, best weighed against specific use cases and regional requirements rather than the confidence of the press release.
