Apple had a great translation layer (Rosetta) that allows you to run x64 code, and it's very fast. However, Apple being Apple, they are going to discontinue this feature in 2026, that's when we'll see some Apple users really struggling to go fully arm, or just ditch their MacBook. I know if Apple does follow through with killing Rosetta, I'll do the latter.

It's a transpiler that takes the x86-64 binary assembly and spits out the aarch64 assembly only on the first run AFAIK. This is then cached on storage for consecutive runs.