There are various types of wine, and the way they are matured varies accordingly.
Literal
Wine [to-には] various types [subject-が] exist, that [by-によって] maturation [possessive-の] method [also-も] various is.
それによって (depending on that/accordingly) links the variety of types to the variety of methods. 育成の仕方 (way of raising/maturing) applies a general word to the specific domain of winemaking. さまざま (various) echoes the opening いろいろな. A clean explanatory structure.