The cryopreservation procedure of ovarian tissue is used for subsequent transplantation to preserve fertility in cancer patients. In the case of cancers with possible ovarian damage, due to the increased risk of transmission of malignant cells in the cryopreserved ovarian tissue, after remission of the disease, the transplant cannot be performed due to the high rate of recurrence. Thus, to resolve fertility preservation in these cancer patients, making an artificial ovary that could be transplanted under maximum safety conditions was necessary. This was not easy to achieve because it was essential to develop a porous and rigid matrix that could encapsulate and protect the ovarian follicles and, at the same time, create an optimal neuroendocrine environment. The present article analyzes the technological progress in creating an artificial ovary, the opportunity for transplantation, the proper counseling of these patients, and the prognosis regarding using this modern technique to preserve fertility.