E2B Raises a $21M Series A to Offer Cloud for AI Agents to Fortune 100

SAN FRANCISCO, July 28, 2025 /PRNewswire/ -- E2B, the leading provider of open-source cloud infrastructure specifically designed for AI agents, has raised a $21 million Series A funding round led by global software investor Insight Partners, with participation from Decibel, Sunflower Capital, and Kaya, along with prominent angels such as Docker's former CEO Scott Johnston. The investment will enable E2B to accelerate the expansion of its cloud infrastructure offerings, enhance its open-source interoperability with other infrastructure providers, and scale its enterprise-focused engineering and go-to-market teams globally.

This funding round reflects E2B's vision of having dedicated infrastructure for agents with secure and safe sandboxes that can spin up rapidly, providing computer-use features for agents to carry out complex, multi-step tasks. This vision is embraced by 88% of Fortune 100 companies that have already signed up with E2B.

E2B's customer list already includes leading AI innovators such as Hugging Face, Perplexity, Groq, and Manus. Beyond these, E2B is used by top foundation model providers and Fortune 100 enterprises. These companies leverage E2B's sandboxed cloud environments to run secure, complex agentic workflows that can reduce deployment times, boost security, and accelerate innovation.

"The expectations we have from AI agents in the enterprise are great. However, we expect them to scale and perform on legacy infrastructure not designed for agentic use," said Vasek Mlejnsky, Co-founder and CEO of E2B. "E2B solves this by equipping AI agents with safe, scalable, highly performant cloud infrastructure as well as tools that help agents scale in production."

E2B plans to strengthen its open-source sandbox protocol as a universal standard and further develop enterprise-grade modules like secrets vault and monitoring tools.

"Insight Partners is excited to back E2B's visionary team as they pioneer essential infrastructure for AI agents," said Praveen Akkiraju, Managing Director at Insight Partners. "Such rapid growth and enterprise adoption can be difficult to achieve, and we believe that E2B's open-source sandbox standard will become a cornerstone of secure and scalable AI adoption across the Fortune 100 and beyond."

"The future of enterprise productivity is agent-driven," added Mlejnsky. "Our goal is to provide the standard runtime infrastructure for this new era of work."

About E2B

E2B provides open-source cloud sandboxes for AI agents, equipped with all tools necessary for them to complete complex tasks like generating analyst-grade reports or building websites from a single prompt. E2B is trusted by enterprises and hyper-growth startups like Perplexity, Hugging Face, and Groq to securely deploy, scale, and manage complex AI agentic workflows.

About Insight Partners

Insight Partners is a global software investor partnering with high-growth technology, software, and Internet startup and ScaleUp companies that are driving transformative change in their industries. As of December 31, 2024, the firm has over $90B in regulatory assets under management. Insight Partners has invested in more than 800 companies worldwide and has seen over 55 portfolio companies achieve an IPO. Headquartered in New York City, Insight has offices in London, Tel Aviv, and the Bay Area. Insight's mission is to find, fund, and work successfully with visionary executives, providing them with tailored, hands-on software expertise along their growth journey, from their first investment to IPO. For more information on Insight and all its investments, visit insightpartners.com or follow us on X @insightpartners.

Media contact: [email protected]

SOURCE E2B