Difference from 统一 (tǒngyī): While related, these are not the same.
统一 (tǒngyī) means “to unify,” often implying bringing something under a single standard, rule, or political entity (e.g., unifying a country).
一体化 (yītǐhuà) is about making different systems work together as a single functional whole, where the original parts might still be distinct but are deeply interconnected and synergistic. Think of `统一` as making everything the same, while `一体化` is about making different things work as one.