About us

We are a team of former Microsoft engineers who helped build the Microsoft Marketplace and the programs that support it. Today, we help software companies bring their solutions to the Microsoft Marketplace with confidence.

Years of working on the marketplace from the inside give us a unique perspective. We understand the edge cases, the compliance requirements, and the co-sell mechanics that actually move deals forward because we built and operated them at scale.

Cumulus26 staff have onboarded more than 300 ISV partners to the Microsoft Marketplace. We've seen what slows publishers down, what derails offers, and what separates partners who generate real pipeline from those who stall. That experience shapes everything we do.

What We Do

Simplicity is at the heart of everything we create. We build products that are easy to use and understand, precisely because we know how complex the marketplace can be.

Cumulus26 helps software companies publish, transact, and grow on the Microsoft Marketplace without having to build marketplace infrastructure from scratch. Our flagship platform, AMPup, is purpose-built to shorten time-to-revenue. It combines guided workflows, clear guardrails, and support from people who have been there and done that.

Whether you're listing your first offer or scaling a mature marketplace business, we meet you where you are and help you grow with confidence.

How We Work

Our team blends deep product engineering with partner program expertise so you can stay focused on your customers. Beyond the platform, we work side-by-side with ISVs to activate co-sell and go-to-market motions that turn listings into real pipeline.

Our goal is straightforward: make marketplace success repeatable, predictable, and aligned with how Microsoft actually engages ISVs in the field. We know how that works because we spent years on the other side of that relationship.