Anti-de Sitter solutions of supergravity theories are relevant in the context of the AdS/CFT correspondence. Here I will discuss their moduli spaces which correspond to the conformal manifolds of the dual superconformal field theories. In particular, I will focus on maximally supersymmetric AdS solutions of gauged supergravities in dimensions D >= 4. I will derive criteria on the existence of such solutions in terms of the gauge group of the supergravity. Eventually, I will discuss possible supersymmetry preserving deformations and under the assumption that the scalar field space is symmetric I will give an explicit recipe for the computation of the moduli space.