noun
A favorable moment or turning point that can be seized to start or change something. Often used with ～を契機に or ～を契機として.
留学を契機に、彼は人生観が変わった。
Studying abroad became an opportunity that changed his outlook on life.
この
I want to use this success as a springboard to expand the business further.
noun
The direct cause or catalyst that sets an event in motion. Often used with ～が契機で or ～が契機となって.
その事件が契機で、法律が改正された。
That incident was the trigger for the law to be revised.
小さなミスが契機となって、大きなトラブルに発展した。
A small mistake became the cause that escalated into a major problem.