To use EVE-NG effectively, you must understand the different formats supported by the platform:

The process of acquiring and "fixing" images is often the biggest hurdle for new users.

Not directly. The Community Images Repository only provides freeware or EOL images, not modern vendor OSes.

Also known as IOU (IOS on Unix). These are lightweight Cisco software binaries that run directly on the Linux kernel. They are extremely resource-efficient but were historically intended for internal Cisco use.