Nothing spectacular, really. After 20 years of working at several FAANGs, you just tend to move up the ranks to senior/staff-level positions. You also build a reputation that can follow you around the industry as people you've worked with also move around.

Once you're pegged for a Google L6/Facebook E6/Microsoft 67/etc. role, there's a lot that those companies are willing to agree to in order to get you on-board vis-a-vis Google L3/Facebook E3/Microsoft 59/etc.