expression, godan verb (-ru)
it has been decided that; it has been arranged that; it turns out that
Formal or written expression indicating that a situation has been settled or has come about, often as a result of prior deliberation or natural consequence. Similar to ことになる but slightly more formal.
来月から東京支社に転勤することとなりました。
It has been decided that I will be transferred to the Tokyo branch from next month.
協議の結果、計画は延期することとなった。
As a result of discussions, it was decided that the plan would be postponed.