をもって

をもって is used to indicate that something takes effect at a specific point in time or is formally decided or announced at that point. It often appears in official statements, announcements, notices, and formal writing. Compared to similar expressions, をもって sounds objective and neutral, without strong emotional nuance. This grammar is commonly used to: Announce the start or end of a role, service, or policy Indicate an official time when something becomes valid Make formal statements in business or public contexts