The answer
Recursion heavily relies on the Call Stack to pause the current function state, call a smaller instance of itself, and eventually 'unwind' back to combine the results.
The Call Stack: How Functions Execute in Memory
How does the Call Stack relate to recursion?
More FAQs in The Call Stack: How Functions Execute in Memory
The Call Stack is an internal memory structure used by the computer to keep track of active functions and where to return control after a function finishes.
It uses a Stack, which operates on a Last-In, First-Out (LIFO) principle, ensuring the most recently called function finishes first.
A Stack Overflow occurs when the Call Stack exceeds its memory limit, almost always caused by infinite recursion (a function calling itself without a base case).
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