原因・理由N1
〜を機に
taking... as an opportunity / with... as the occasion / since...
Structure
N + を機に（して）
Explanation
N + を機に: taking the noun as a turning point or opportunity.
Examples
転職を機に、生活スタイルを一新した。
Taking the job change as an opportunity, he overhauled his lifestyle.
引っ越しを機に、思い切って物を捨てた。
On the occasion of moving, he decisively threw things away.
Note
Synonymous with をきっかけに/を契機に, used for major changes.