Why is A3 abelian?

Could you elaborate on why A3, the alternating group of degree 3, is considered an abelian group? What specific properties of A3 allow it to exhibit commutative behavior, where the order of elements in a multiplication operation does not affect the outcome? Are there any particular theorems or proofs that demonstrate this characteristic of A3? Additionally, how does this abelian property compare to other groups, particularly those that are not abelian?