A Why Is AdS Space Ideal for Formulating String Theory and Holography?

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In AdS/CFT, we have the GKP-witten relation

$$\left< \exp \left( i \int \phi^{(0)} O \right) \right> = e^{-S[\phi^{(0)}]}$$

why is it natural to formulate string theory on an AdS space? is it a natural background for some particular definite reasons? Is holography naturally formulated in an AdS background?
 

Thread 'The Universe is No Simulation'

I came across the following paper by Mir Faizal, Lawrence M Krauss, Arshid Shabir, and Francesco Marino from BC. Consequences of Undecidability in Physics on the Theory of Everything Abstract General relativity treats spacetime as dynamical and exhibits its breakdown at singularities‎. ‎This failure is interpreted as evidence that quantum gravity is not a theory formulated {within} spacetime; instead‎, ‎it must explain the very {emergence} of spacetime from deeper quantum degrees of...
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