How We Made Cloud Browsers 3x Cheaper and Faster
Summary
The article explains how Browser Use runs each browser session in its own Firecracker microVM inside regular EC2, achieving sub-second startup and $0.02/hour costs. It covers the rationale for moving from unikernels to Firecracker, a custom control plane for auto-scaling, nested virtualization challenges, memory and CPU optimizations, stealth considerations, and future improvements like skipping Chromium startup.