Cryogenic technology in IVF has undergone two transformative developments since the first successful frozen embryo transfer in 1984. The first was the refinement of controlled rate freezing protocols for sperm and embryos, which established the basic infrastructure of cryogenic storage in clinical IVF. The second was the development of vitrification – ultrarapid cooling using high concentrations of cryoprotectant – which produced substantially higher post-thaw embryo survival rates and enabled the widespread adoption of freeze-all strategies, in which all embryos from a stimulation cycle are cryopreserved for transfer in a subsequent natural cycle. This approach has been associated with improved endometrial receptivity and reduced rates of ovarian hyperstimulation syndrome. The technology underpinning both approaches – the storage vessels, controlled rate freezers, and cryogenic consumables – has also advanced significantly, with improved vacuum performance, better monitoring integration, and more precise cooling control. Cryolab has supplied cryogenic technology for IVF laboratories throughout this period of development.