Explore the versatile capabilities of QEMU, a powerful virtualizer and emulator, in this 41-minute conference talk by Ben Dooks from Codethink. Discover how QEMU can be utilized for developing new Linux systems, creating test rigs, bootstrapping distributions, and experimenting with new systems without leaving your PC. Learn about various QEMU configurations, interfaces, and internals through real-world project examples. Gain insights into testing low-level kernel features in isolation, emulating pre-production hardware for software development, virtualizing test farms, and cross-bootstrapping operating systems. Understand the challenges and solutions involved in these applications, and explore QEMU's potential for migration support and other use cases in software development and testing environments.