May 2026
Intermediate
496 pages
12h 11m
Japanese
book
実践 ハイブリッドクラウド・セキュリティアーキテクチャ ―ゼロトラスト原則を用いたセキュリティ設計の実践的手法
by Mark Buckwell, Stefaan Van daele, Carsten Horst, 石川 朝久
Content preview from 実践 ハイブリッドクラウド・セキュリティアーキテクチャ ―ゼロトラスト原則を用いたセキュリティ設計の実践的手法
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4.3
機能要件の指定
105
Won't Have（先送り）
※７
プロジェクトが実装しない要件を明文化します。おそらく、その要件は追加のコストや複雑
さをもたらすため、実装されないことを明確にするため、ソリューションから明示的に除外す
る必要があります。
表4-6に示すプロジェクトの 2回のスプリントをもとに、優先順位を付けた要件例を確認していきま
しょう。
表4-6 優先順位付けされた要件
参照 スプリント 1 スプリント 2 要件
REQ_SEC_1 MUST MUST すべてのユーザは、システムにアクセスする前に識別・認
証されなければならない。
REQ_SEC_2 SHOULD MUST すべてのユーザは、多要素認証を利用して認証されなけ
ればならない。
REQ_SEC_3 COULD SHOULD すべてのユーザに、システムの不正利用に関する法的警
告を提示しなければならない。
この表は、段階的に実施されるシステムによるユーザの識別と認証に関する3 つの要件を示していま
す。常にユーザの識別と認証が必要であり、多要素認証、法的警告と続いていきます。
要件の品質を評価する方法と、要件に優先順位を付ける方法がわかったところで、機能要件から始
めて、要件の仕様化に話を移していきましょう。
4.3
機能要件の指定
機能要件を指定する方法は様々です。機能要件の書き方は、表4-7で示す通り、システムが提供する
内容を列挙する単純な形式でかまいません。
表 4-7 ユースケースの記述例
ID 要件
FR_SEC_IA_001
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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.