Jailbreaking a PS4 involves hacking into the game console to lift the built-in software restrictions put in place by Sony. It allows users to gain full administrator access and make unauthorized customizations.
Jailbreaking circumvents the security controls to run unapproved third-party apps, mods, and operating systems. It unlocks features disabled by Sony, such as cross-platform gameplay.
Jailbreaking gives advanced users full control over their system. However, it voids the warranty and can enable piracy. There are legal risks, stability issues, and the inability to undo it, so the implications must be weighed carefully.