When you run an operating system or program on QEMU, it creates a virtual machine (VM) that emulates the hardware of a computer system, including the CPU, memory, storage devices, network interface, and other peripherals. QEMU works by emulating the hardware of a computer system. Additionally, QEMU is open-source software, which means it can be customized and extended to meet specific needs. It also provides a powerful set of tools for debugging and analysis, which can help developers identify and fix bugs more quickly. QEMU is important because it enables cross-platform development and testing, which is essential for many software projects.

Testing: QEMU is often used for testing and development purposes, as it allows developers to test their software on a wide range of architectures without needing to have access to physical hardware.

Debugging: QEMU provides a powerful set of debugging features that can be used to analyze and debug software running on different architectures.

Virtualization: QEMU can also be used as a hypervisor to run multiple virtual machines (VMs) on a single host computer.

For example, you can run ARM-based software on an x86-based computer, or vice versa.

Emulating different architectures: QEMU allows you to run software written for one architecture on a different architecture.

QEMU can be used for a variety of purposes, such as: It supports emulating a wide range of CPUs, including x86, ARM, MIPS, PowerPC, and more.

QEMU (short for Quick EMUlator) is a free and open-source machine emulator and virtualizer that can run operating systems and programs written for one architecture on a different architecture. Running Arm-based Docker Image on non-Arm Platform using Emulator Ajeet Raina Follow Docker Captain, ARM Innovator & Docker Bangalore Community Leader.

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