depending on ...
Used after a noun (often with の) to indicate that something varies or is determined by that factor. Formal and often used in written or business contexts.
See also: 如何
結果は努力いかんによって変わる。
The result changes depending on your effort.
参加できるかどうかは、日程いかんによって決まります。
Whether I can participate will be decided depending on the schedule.
次第 is more common and less formal than 如何によって, and can also mean 'as soon as'.
如何 is the base noun meaning 'how' or 'circumstances'; 如何によって is the phrase meaning 'depending on'.
Combination of 如何 (いかん, 'how; circumstances') and によって ('by; depending on').