Surrogates

Gestational surrogacy is an arrangement in which a woman carries and delivers a baby for another person or couple. The woman who carries the baby is the gestational surrogate, or gestational carrier. The parents-to-be are known as the intended parents, and they are involved in the pregnancy, can be present at the birth, and become the child's parents after the baby is born.
In gestational surrogacy, the baby isn't genetically related to the gestational surrogate – the egg comes from the intended mother or an egg donor, and the sperm comes from the intended father or a sperm donor. Donor embryos may also be used.
Without a donor embryo, in vitro fertilization (IVF) is necessary because eggs from one woman are used to create embryos to be implanted in another woman's uterus. In IVF, fertilization occurs after eggs and sperm are combined in a laboratory. One or more of the resulting embryos are then transferred to the gestational surrogate's uterus.