Announcements

San Francisco-based startup E2B, with Czech Founders, raises $21M Series A led by Insight Partners to scale AI agent infrastructure

by
Tom Cironis
July 29, 2025
Czech-founded startup E2B has successfully raised $21 (€18.16) million Series A. The round was led by Insight Partners, alongside Decibel Partners, Sunflower Capital, KAYA VC, and angel investors, including Scott Johnston, former CEO of Docker.

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.”

Insight Partners is a global venture capital and private equity firm headquartered in New York City, with additional offices in London, Tel Aviv, and Palo Alto. It specializes in investing in high-growth technology, software, and internet companies.

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.”

Subscribe to our newsletter

Join our newsletter to get the best hottest startup tapas.

Popular posts

“ViennaUP is a one-stop-shop for regional startups ready to scale” says Gabriele Tatzberger from VBA

May 6, 2026

Czech-led Exaforce Raises $125M Series B To Scale AI Native Security Operations Platform

May 12, 2026

Panathēnea 2026 Returns to Athens as a Global Meeting Point for Europe’s Tech and Startup Ecosystem

May 11, 2026

Related posts

Exaforce has raised $125M in Series B funding. The round strengthens its position in AI-native security operations. It is one of the largest investments in the emerging AI SOC market. The funding reflects rising demand for real-time cyber defence systems at enterprise scale.
by
Jakob Ulrych
The Recursive CEE Forum returns for its second edition as part of ViennaUP 2026, bringing together Europe’s leading founders, investors, policymakers, and ecosystem builders with a renewed focus on turning connections into tangible outcomes.
by
Jakob Ulrych
Panathēnea, the not-for-profit international festival where technology, entrepreneurship, and culture come together to shape what’s next, returns to Athens for its second edition, bringing together founders, investors, innovators and artists from across Europe and beyond.
by
Jakob Ulrych
New Marketplace add-on brings Ajelix’s agentic AI functionality into Google Workspace, helping business users create spreadsheets, documents, presentations, and forms without switching tools.
by
Jakob Ulrych