(specifically the format) is a specialized file used to run the PlayStation 1 classic Final Fantasy VIII on Sony's handheld consoles, primarily the PlayStation Portable (PSP) PlayStation Vita
Cons of the EBOOT version:
If you’re building your own Eboot with PSX2PSP, the best single feature to add is widescreen via hex patch – it transforms the experience on modern handhelds.
If you're looking for more information on FF8 eboot, here are some additional resources:
(due to 32-bit pointer limitations); exceeding this can cause crashes on multi-disc loads. The Evolution of FF8 Portability
There is a specific joy in playing Final Fantasy VIII on a bus, hearing "Liberi Fatali" blast through headphones, while holding a device that is nearly 20 years old. The EBOOT format is the key that unlocks that experience.