Introduction to StackOne
London-based StackOne, an AI-powered platform, has successfully raised €17.6 million in a Series A funding round. This funding round was led by GV (Google Ventures), with participation from Workday Ventures, XTX Ventures, and existing investors Episode 1 and Playfair, as well as angels from OpenAI, Deepmind, Microsoft, and Mulesoft. The total amount raised by StackOne now stands at €21.1 million.
The Problem StackOne Solves
For over a decade, the co-founders of StackOne, Romain Sestier and Guillaume Lebedel, have experienced the challenges of integrations firsthand. They saw how teams would spend months rebuilding or refusing requests due to the lack of a suitable solution on the market. This prompted them to build StackOne, a platform that aims to reinvent how integration platforms are built, with a focus on depth, accuracy, and security by default.
The Importance of Integrations
Integrations have become a top priority for 83% of B2B buyers. However, 71% of SaaS firms still take three weeks or more to launch a single connection, resulting in significant losses of time and resources for engineering teams and lost contracts for SaaS firms. StackOne’s platform provides SaaS vendors and AI Agent builders with a universal interface for enterprise-grade integrations, enabling powerful bi-directional integrations while protecting sensitive data.
How StackOne Works
StackOne’s integration platform combines a proprietary AI agent and real-time engine to give teams the speed, coverage, and reliability to connect SaaS and AI agents to the enterprise tech stack. The platform provides access to 3,000+ actions on 200+ connectors instantly, from HR to CRM, ticketing, messaging, and IAM. Developers can automatically build use-cases on top of complex APIs, connecting AI and SaaS tools to their customers’ entire tech stack in a fraction of the time and with higher accuracy than leading LLMs.
The Future of Integrations
With the rise of AI agents, the demand for integrations is increasing. Emerging standards like Model Context Protocol (MCP) show where the market is heading, but they lack the security, depth, and scalability needed for real enterprise use. StackOne solves this by providing a single layer that marks the birth of a new generation of integrations platforms for an AI-first world.
Investor Insights
Luna Schmid, Partner at GV, praised StackOne’s ambition and clarity, stating that the company is creating infrastructure that modern software and the entire AI agent ecosystem can rely on. Barbry McGann, Managing Director and SVP at Workday Ventures, highlighted StackOne’s ability to integrate with complex enterprise systems quickly and deeply, unlocking powerful use cases for customers.
Conclusion
StackOne is poised to be one of the fastest-moving players in the €15.4 billion integration space, having recently surpassed 1 billion API calls and with customers across three continents. With its focus on building a growing AI developer community and its own open-source contributions, StackOne is well-positioned to redefine the integrations category. The company’s successful funding round and innovative approach to integrations make it an exciting player to watch in the AI-powered platform space.
