The pallof lift is commonly used in many programs and for good reasons:
a simple set up
a good core exercise that really is fullbody
i does not necessarily load the joints and spine like some "traditional core" exercises do
Plenty of variations to increase muscle recruitment or decrease it
The narrow stance pallof lift is a subtly sneaky variation that can be extremely challenging when executed correctly.
Serves as a great stand-alone core exercise OR a prep exercise before major lifts, speed days, or finisher post workout.