Echo raises $35M to secure the enterprise cloud's base layer — container images — with autonomous AI agents

As enterprises accelerate the deployment of LLMs and agentic workflows, they are hitting a critical infrastructure bottleneck: the container base images powering these applications are riddled with inherited security debt.

Echo, an Israeli startup, is announcing a $35 million in Series A funding today (bringing its to-date total to $50 million in funding) to fix this by fundamentally reimagining how cloud infrastructure is built.

The round was led by N47, with participation from Notable Capital, Hyperwise Ventures, and SentinelOne. But the real story isn't the capital—it's the company’s ambitious goal to replace the chaotic open-source supply chain with a managed, "secure-by-design" operating system.

The Hidden Operating System of the Cloud

To understand why Echo matters, you first have to understand the invisible foundation of the modern internet: container base images.

Think of a "container" like a shipping box for software. It holds the application code (what ...