String theory provides the most consistent framework for quantum gravity and to investigate the quantum effects on gravity within this theory, I focus on the holographic principle. The most successful realization of holography is the duality relating certain quantum theories and gravity theories. This duality gives a dictionary translating concepts from one theory to that of the other, providing a new methodology to study physical systems that was not possible prior to this correspondence. I utilize the strength of holography by developing tools for string theory using quantum theory guidance. It is in this setting that new methods are established for gravity to match with the expected quantum prediction. I will discuss some recent examples where the expressions I obtain on the gravity side agree with the quantum side, providing another check on holography while further deepening our understanding of string theory.