ISG (III): The AI Contact-Center Boom Flows Through a Consulting P&L

On September 10, 2026, Information Services Group — the tech research and advisory firm that trades as Nasdaq: III — published its latest take on the biggest theme in customer service. Contact centers, ISG found, are morphing from call-routing queues into engagement hubs, with most new deployments now built on cloud "contact-center-as-a-service" platforms, and it assessed 44 software providers across eight buyers' guides. The reaction was telling: the shares rose less than one percent. That muted tick is the real story hiding under the "AI contact center boom" headline, because it points to exactly how ISG makes its money.

ISG does not sell contact-center software. NiCE, Verint, Genesys, Five9 and Salesforce do — they are the firms ISG's research actually ranks. ISG is the referee: an independent advisor that helps large enterprises pick, govern and benchmark those vendors, and sells the research to whichever side wants a neutral map. That distinction matters enormously to a retail investor, because a company's growth rate and valuation depend on which business it is actually in.

An exponential theme, a linear business

Here is the central tension. The technology side of this is moving on an exponential curve, in the truest sense of the word. ISG published research a year ago noting contact centers have seen more innovation in the past three years than at any other point in their history, and forecasting that by 2027 more than three-quarters of contact centers will run multiple generative-AI applications inside their service processes. That is an Exponential Age pattern — a compression of time, where the software landscape turns over faster than enterprises can adapt.

But what ISG actually books from that wave is advisory fees and research subscriptions, both of which scale with the professionals doing the work, not with software sold. The company has about 1,281 employees, consulting utilisation of 74%, and an adjusted-EBITDA margin of around 14%. That headcount-plus-margin envelope is a linear, services economics — the opposite of a software vendor's contribution margin. The theme is exponential; the pick-and-shovel that ISG holds is linear.

That is not a criticism — it is the identity of the asset, and it tells you what the "growth catalyst" can and cannot do.

Where AI actually shows up in the numbers

Strip the jargon away and the AI wave is very visible inside III's P&L, but as a mix shift rather than a new revenue sink. In the first half of 2026, AI-related revenue reached $47 million, about 37% of the firmwide total, after AI work grew 64% year over year in the second quarter. The firm's AI advisory now reaches more than 350 clients — roughly triple the prior year. That is a real compounding story.

Yet the firmwide numbers are far more modest, because AI is being pulled from the same advisory barrel, not poured in from a separate one. Total second-quarter revenue rose 6.4% to $65.5 million. Full-year 2025 revenue was roughly flat at $244.7 million on a reported basis (up about 7% excluding a divested automation unit), though margins did real work — adjusted-EBITDA margin widened to 13.2% from 10.2%. The honest summary: AI is the growth engine, but it is accelerating a consulting business whose pace is capped by how many bodies it can bill.

The recurring research-and-governance stream is the durable part of the model. In the second quarter, recurring revenue hit a record $30 million, up 7%, and ISG's largest-ever single contract — worth up to $17 million with a global manufacturer — pays it to direct $300 million of technology spend across 200 vendors. Complexity is the toll collector: the more software choices explode, the more a buyer wants an independent map, whether or not the headline vendors are booming.

What would actually bend the curve

Two things would change the reading, one favourable and one not. On the upside, if the technology buying cycle turns — and the firm deliberately guides that enterprises are cautious on macro and geopolitical noise but expected to accelerate AI spending through the year — the mix shift toward AI advisory becomes a rising tide on a stable-cost base, and margins are the place the leverage shows up. The January acquisition of an AI-readiness benchmarking platform, with an early pipeline of more than 30 client prospects, is a bet that readiness assessment becomes a recurring hook.

On the downside, the same forces that feed ISG could starve it. If enterprises stretch vendor-selection cycles, "do it ourselves" bespoke work gets delayed first in a macro squeeze. And the genuine disruption risk is subtle: the more that AI agents compress and automate the very decisions and procurement diligence ISG charges for, the more the demand for human advisory hands could shrink even as the software theme booms. A referee has no durable moat if the game eventually refs itself.

The useful lens

At around $5, within a 52-week range of $3.74 to $6.45, ISG trades as a profitable, dividend-paying advisory firm — the payout sits comfortably above 3% — with buybacks reauthorised at a record $30 million. This is not a momentum stock and not an exponential company. It is a modestly growing, margin-improving services compounder that happens to sit in front of the single biggest enterprise theme of the decade.

The AI contact-center boom is real, and ISG is right that it changes the strategic role of the call center. But investors should not confuse the curve of the theme with the curve of the company's earnings. The question for III is not whether AI adoption is accelerating — it plainly is — but whether the referee's recurring research and governance fees grow and take margin alongside it. That is a slower, more prosaic bet than the catalyst catchphrase suggests, and setting the right expectation is half the investment case.