Gartner Research

Microsoft 365のサービス停止にどう対処するか

Published: 13 April 2023


Microsoft 365のさまざまなサービスは今や企業のコアなビジネス・ツールである。一方でこれらのサービスが障害によって利用できないケースもあり、その場合のビジネスへのインパクトは小さくない。本リサーチノートでは、I&Oリーダーがこのリスクをどうヘッジしていくべきかについて提言する。

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  • 企業にとってMicrosoft 365はビジネス活動に欠かせないクリティカルなクラウド・サービスとなりつつあるが、多くの企業が、サービスが停止した際の代替となる手段ソリューションを把握できていないか、その採用を判断できずにいる。

  • Microsoft 365が重要なクラウド・サービスとなっているにもかかわらず、企業は各サービスが停止した場合のインパクトをコントロールできていない。


Microsoft 365の危機管理について責任を持つインフラストラクチャ/オペレーション (I&O) のリーダー以下を行う。

  • Microsoft 365のサービスごとに自社における継続稼働要件を精査して、必要な場合には代替ソリューションの適用可否整理・判断する。ただし、クラウドの可用性と信頼性の程度を、過去のサービス停止SLAなどを勘案して検討し、結論については経営層の理解と承認を得る。

  • Microsoft 365の障害時さまざまな方法で稼働や障害の状況を把握・確認できるよう準備をしておく。ユーザー向けのガイドを作成して周知する。

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Takuma Yamamoto

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