Unified Communications as a Service: Vendor Landscape 2026

We have just watched a major market forecast shrink by twenty percentage points in the space of twelve months. Last year, the prediction was that 90% of organisations would run enterprise calling through their existing cloud collaboration tools by 2028. This year, that same figure has been revised down to 70%. The shift is not trivial, and it sits alongside a vendor landscape that has actually contracted rather than expanded.

The vendor field shrinks while the top four hold position

Cisco, Microsoft, RingCentral and Zoom retain their Leader positions for a second consecutive year. 8×8, Dialpad and GoTo remain Visionaries. Vonage and Wildix stay as Niche Players. No vendor qualifies as a Challenger this year. Google and Sangoma, both rated Niche Players twelve months ago, have dropped out entirely. The field has shrunk from eleven providers to nine.

In our experience working with Australian organisations, this contraction reflects what we are seeing in the field. Fewer buyers are willing to back smaller or regional platforms when procurement committees are pushing for vendor consolidation and board-level risk conversations are getting louder. No organisation is immune to that pressure. When a global analyst removes two vendors from consideration in a single year, it accelerates a decision-making pattern that was already underway.

Licensing and cost structures remain unresolved across the leader group

Microsoft continues to gate its full AI capability set outside standard licensing. Copilot sits as a separate cost, and organisations chasing the full Teams Phone and Copilot experience are paying for both. RingCentral’s pricing for midlevel knowledge workers now sits above market average, with several advanced features requiring paid add-ons. Zoom customers are encountering frequent licensing and bundling changes that push renewal costs up and shift entitlements. Cisco caps its financial remedy for Webex Calling outages at 5% of monthly service fee, a threshold that large enterprises with strict reliability demands may find insufficient.

We work with organisations who assume that unified communications as a service pricing is straightforward. It is not. The base licence is one thing. The AI features, the contact centre integrations, the bring-your-own-carrier options, the premium support, the uptime guarantees and the compliance add-ons are all separate conversations. The total cost of ownership diverges sharply from the headline price, and it diverges differently depending on which vendor you are evaluating and which features your business actually needs.

What the forecast revision tells us about adoption timelines

The revised forecast leans more heavily on geopolitical tension and data sovereignty requirements as slowing forces. In our view, those factors are real but they are not new. What has changed is the gap between vendor roadmap promises and what IT teams are willing to bet on when they have to run enterprise calling at scale across distributed workforces. The optimism that drove the original 90% figure assumed faster integration maturity, smoother migrations and fewer licensing surprises than what Australian organisations are actually experiencing.

Our view is that the 70% figure is closer to what Australian organisations will reach by 2028, but even that depends on vendors resolving the licensing complexity and cost escalation patterns that are currently slowing decisions. The technology works. The business case for consolidation is sound. What remains unresolved is whether organisations trust the vendor execution and commercial model enough to move calling into the same platform that runs their meetings and chat.

The vendor landscape is settling. The commercial model is not. If you are evaluating unified communications as a service for your organisation, our advice is to focus less on the leader quadrant and more on the total cost structure, the licensing stability and the remedies that apply when the platform does not perform. Those are the variables that will determine whether your migration succeeds or whether you end up in a renewal negotiation that looks nothing like what you signed up for.