Assistant reproduction technologies are in constant evolution, among them the artificial inseminationÂ (AI). AI has been successfully used in pigs for decades, especially to improve boar efficiencÂ and productivity. Lately, swine AI has taken on a new lease of life since efficient AI isÂ essential for solving future challenges in the porcine industry and to enhance productivity. TheÂ present paper summarizes several factors concerning AI, starting with an overview of someÂ physiological aspects including the female reproductive tract and sperm transport, as well asÂ sperm losses during insemination and uterus sperm selection. Strategies developed to reduce theÂ number of sperm during the AI process, are also reviewed, along with their combination withÂ new reproductive technologies for application in pig production in the near future.