The focus of the current review is on the application of optical and EPR spectroscopy tools to cadmium zinc borate glasses that have been altered with MoO3 ions. The melt quenching procedure is used to generate the samples with compounds of B2O3-CdO-ZnO-K2O-MoO3, in which the amount of MoO3 grew at the expense of the amount of K2O content. The XRD spectra that were acquired for these samples revealed that there were no strong peaks, which verified that the material was in an amorphous phase. In order to investigate the many transitions and ligand field concepts surrounding the transition metal ions, optical absorption and EPR spectra were both recorded and evaluated. Tauc and Urbach plots have been drawn, and the relevant energies and disorder of the samples have been analyzed. It has been shown that as the mole percentage of MoO3 in these glasses grows, the band gap decreases, going from 3.036eV to 2.919eV, and the refractive index increases, going from 2.387 to 2.419, both of which are advantageous for optical applications. The EPR spectra revealed two unique and substantial signals, one at g = 4.3 and the other at g = 1.9, which referred to the presence of Mo5+ ions at octahedral coordination sites with C4V point group symmetry and partially distorted axial symmetry. A second signal's existence adds validity to this interpretation. This is shown by the presence of the second signal