によるBy means of, According to, Depending on, Because of, Due to

によって, による, and により are all different versions of the same expression, that can basically be translated as 'according to (A)', or 'depending on (A)'. This uses the same よる as seen in the grammar pattern によると. They will be used in the following way:

によって - Generally used before a comma (although not always). Acts as the separation point between the (A) and (B) parts of a sentence. Made up of the case marking particle に, and the う - Verb よる in its て form.

による - Generally used at the end of a sentence, to highlight that the previous statement depends on (A).

により - Almost always used before a comma. Acts as the separation point between the (A) and (B) parts of a sentence. Made up of the case marking particle に, and the う - Verb よる in its conjunctive form.

To use any of these constructions, attach them to the end of a noun that you want to express as being the 'dependent' thing.

Caution

による may also sometimes be followed by a noun. In these cases, it will become a verb modified noun, and highlight that (B) resulted from (A).

Fun Fact

Although よる is almost always written in hiragana, there are several different kanji that use this reading. They all share similar meanings. Learn more about this in the によると grammar point.