Quantization in general refers to the transition from a classical to a corresponding quantum theory. The inverse issue, called the classical limit of quantum theories, is considered a much more difficult problem. A rigorous and natural framework that addresses this problem exists under the name strict (or C*-algebraic) deformation quantization. In this talk, I will first introduce this concept by means of the relevant definitions.Subsequently, I will show how this can be applied as a tool to study of the classical limit of quantum theories. More precisely, the so-called quantization maps allow one to take the limit ofsuitable sequence of algebraic states indexed by a semi-classical parameter in which the sequence typically converges to a probability measure on the pertinent phase space, as this paramters approaches zero. In addition, since this C*-algebraic approach allows for both quantum and classical theories, it provides a convenient way to study the theoretical concept of spontaneous symmetry breaking (SSB) as an emergent phenomenon when passing from the quantum realm to the classical world by switching off this parameter. These ideas are illustrated with several physical models, e.g. Schrodinger operators labeled by Planck's constant and mean-field quantum spin systems indexed by the number of lattice sites. Finally, a short summary on symmetry breaking in real materials is provided.