Explore the third lecture in a series on the AdS-CFT conjecture from a general relativity perspective, delivered by Toby Wiseman from Imperial College London. Delve into advanced topics such as the bottom-up construction, supergravity, and the universal sector. Examine the Hawking temperature, ATS Soliton, and general solutions. Gain insights into complex calculations and the DSCFT framework. This in-depth talk, part of the ICTP School on Geometry and Gravity, offers a comprehensive exploration of cutting-edge concepts in theoretical physics and mathematics.