Combining Einstein’s theory of general relativity and quantum mechanics in a unified framework of quantum gravity has been a notoriously hard problem and remains one of the main challenges in modern physics. In this talk, I will explain how the AdS/CFT correspondence gives us a new perspective to understand theories of quantum gravity (at least those living in a space with a negative cosmological constant). In particular, holography circumvents the problem surrounding the UV-completion of general relativity. I will discuss general constraints one must place on the microscopic UV-complete theory of quantum gravity in order to recover general relativity at low energies.