Quick Answer
Value types (int, struct) on the stack are allocated in the current method's stack frame — no GC overhead. On the heap (as fields of a class), they're embedded directly in the object. Reference types always go on the managed heap with a GC header. Value types in arrays/objects are inlined; reference types store a pointer.
Answer
Value types are stored inline (stack or within objects). Reference types always reside on the heap. Boxing allocates objects with headers and method table pointers. Inline struct fields avoid indirection, improving cache locality and performance.
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Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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