Quantum Cohomology is a mathematical framework that extends classical cohomology theories to incorporate quantum mechanics. It studies the geometric properties of spaces by considering not only traditional algebraic structures but also quantum effects, leading to new insights in areas like string theory and mirror symmetry. This theory is particularly useful in enumerative geometry, where it helps count the number of curves on a given space. By integrating quantum effects, Quantum Cohomology provides a richer understanding of how geometric shapes behave under various transformations, enhancing our knowledge of mathematical physics and algebraic geometry.