Egg freezing procedure is very similar to the most common infertility treatment - IVF. The difference is that eggs are frozen/preserved for future during egg freezing, and during IVF egg used right away to achieve pregnancy.
Egg freezing is more efficient and cheaper than IVF as was proven by the
most recent study published in Fertility & Sterility in 2022. If you plan to have kids later, egg freezing can increase your chances from 50% to 73% and drecrease the costs more than 2x if you froze before 34.