Surrogacy is an arrangement, often supported by a legal agreement, whereby a woman (the surrogate mother) agrees to become pregnant and give birth to a child for another person who is or will become the parent of the child.

Surrogacy is an assisted reproductive technology that involves at least three participants in its process
Genetic father - a person who has provided his sperm for fertilization
Genetic mother - donates her egg cell, or ovum, which also participates directly in fertilization. Both genetic parents pledge to take care of their future baby
Surrogate mother - a woman of childbearing age, giving her consent to bear and give birth to a child from genetic parents for free or for a fee

Algorithms and standards of surrogate motherhood were formed through trials and errors, but now there are specific laws in some countries that regulate the process completely and prevent various undesirable legal situations.