A while ago, Apple used to include a software feature with macOS on older iMac models. It was called Target Display Mode, and it allowed you to turn an iMac into an external display once your iMac was ...
The last time Apple released an iMac Pro was back in 2017. That could change next year, however, with the Pro designation for Apple's all-in-one PC making a comeback with a custom M5 Max chip in tow.