StackOne Funding News- London-based StackOne Raises $20M Funding

StackOne helps businesses connect multiple APIs into their own platforms. In today’s B2B software world, being able to quickly and securely integrate with many APIs is crucial.

StackOne tackles this challenge with a custom AI agent that makes integration faster and easier to scale.

“For over a decade, Guillaume and I have felt the acute pain of integrations. We’d see teams burn months rebuilding or refusing requests and nothing on the market eased this pain. So we, alongside a super talented and passionate team, built it ourselves,” said Romain Sestier, co-founder and CEO of StackOne.

“StackOne doesn’t just reinvent how integration platforms can and should be built – with depth, accuracy and security by default – but we believe AI agents are the missing piece in finally delivering enterprise-grade integrations at scale.”

“Integrations are now table stakes for winning and keeping customers in B2B SaaS, especially for the ever-growing swathe of AI agents,” added Guillaume Lebedel, co-founder and CTO. “StackOne solves all of this in a single layer; one that marks the birth of a new generation of integrations platform for an AI-first world.”

Experts say the enterprise application integration market could reach $17.5 billion by 2033, thanks to the growth of SaaS tools, AI agents, and the need for smooth data flow between business systems.

With its new funding, StackOne plans to improve its AI features, add more integrations, and support its growing community of AI developers. The company is also backing open-source projects and hosting events like AI Demo Days to help share knowledge and drive progress in AI-powered integrations.

About Stackone

StackOne is a company that helps SaaS businesses connect their products to other software easily. It offers a unified API that lets B2B SaaS companies build built-in integrations with third-party apps directly inside their own platforms.