March 2022
Intermediate to advanced
304 pages
8h 5m
Japanese
Content preview from ITIL 4の教本 ベストプラクティスで学ぶサービスマネジメントの教科書
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260
「可用性」とは、簡単に言えば「使いたいときに使えること」です。「可用性管理」
とは、顧客が事業成果を出すためにサービスをいつ使いたいかを見極め、そのときに
ちゃんと使えるように管理しておくことを指します。
可用性を管理する理由は、「この時間はサービスを使いたい！」という顧客のニー
ズを実現し、顧客が心配なくサービスを利用して自身の成果を追求できるようにする
ためです。
可用性が低いと、ユーザは必要なときにサービスを使えないので、せっかく良い機
能が用意されていたとしても、サービスとしては価値がありません。可能性は機能で
はなく、その機能を適切に使えることを「保証」するための「非機能」の一つとして
説明されます。
＞＞
定義
第 8 章 プラクティス・ガイド
8.16
「 可 用 性 」と は ？
なぜ可用性を管理すべきか?
【サービスマネジメント・プラクティス】
可用性管理
［使用可能］
戦略層
戦術層
運用層
参 考
可用性管理の目的
顧客およびユーザのニーズを満たすために、サービスが合意されたレベルの可用性を確実に
提供すること。
出典「ITIL 4 ファンデーション」
可用性
ITサービスまたはその他の構成アイテムが、合意された機能を必要なときに実行できる能力。
出典「ITIL 4 ファンデーション」
可用性管理 ［使用可能］ ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.