Complex sentence: Palatalization is either an example of assimilation or not so sometimes, it is triggered by a palatal or palatalized consonant or front vowel, but in other cases, it is not conditioned in any way.
Split into simpler sentences: Palatalization is either an example of assimilation or not. That is, in some cases it is triggered by a palatal or palatalized consonant or front vowel, while in other cases it is not conditioned in any way.