Case Study: Lark achieves secure customer-data testing at scale with E2B

Lark spins up thousands of concurrent sandboxes with E2B

Lark, an AI test engineering company, faced the challenge of securely testing customer applications using real customer data and credentials. Their AI agents needed to run hundreds of isolated tests simultaneously, often requiring the ability to launch Docker containers within the test environment, which ruled out most sandbox providers. They turned to E2B to solve this critical isolation problem.

E2B provided a secure sandbox solution that allowed Lark to run Docker containers within an isolated MicroVM environment. This enabled Lark to spin up thousands of concurrent, ephemeral sandboxes from custom templates for rapid testing, eliminating the need to build their own isolation infrastructure and saving them weeks of development time. The partnership with E2B provided a scalable, tried-and-true infrastructure that Lark relies on for handling spiky traffic loads.

Lark