〜をもって

Meaning

Indicates a means or method, or a deadline or cut-off point. A formal expression used in official greetings and announcements. In the form 「〜をもってすれば」, it also expresses the condition "if one uses that means or ability, a good result can be expected."

Examples

本日の営業は午後8時をもって終了させていただきます。 Today's business hours will end as of 8 PM.
彼は終始、誠意をもって交渉に臨んだ。 He conducted the negotiations with sincerity throughout.
彼の語学力をもってすれば、海外勤務も問題ないだろう。 With his language skills, working overseas should be no problem.