July 2024
Beginner to intermediate
272 pages
5h 40m
Japanese
Content preview from アーキテクトの教科書 価値を生むソフトウェアのアーキテクチャ構築
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029
1
トに適合している状態をマーケット用語ではPMF（Product Market
Fit）と呼びますが、PMFはサービスやプロダクトの成功の鍵となりま
す。
このような機敏な試行錯誤を可能とする、ソフトウェアが変化に対応
するスピードがアジリティです。月単位から週単位へ、週単位から日単
位へとリリースサイクルを短縮することが求められます。サービスに
よっては、一日に何度もリリースを行う場合もあるでしょう。
アジリティが落ちる要因
短いリリースサイクルでソフトウェアを改善し続けるためには、一定
のペース（開発生産性）を保たなくてはなりません。ところが、現実の
ソフトウェア開発ではリリースを重ねるごとに生産性が落ちていってし
まいます。
図1.2.1
※8
は、初回リリース時の生産性を100%とし、その後のリ
リースごとの生産性をプロットしたグラフです。
⹅
図1.2.1
リリースごとの生産性
リリースごとの生産性
100%
1 2 3 4 5 6 7 8
75%
50%
25%
0%
出典： Robert C. Martin 著、角 征典、高木 正弘 訳『Clean Architecture 達人に学ぶソフ
トウェアの構造と設計』KADOKAWA（2018）
※8
030
ソフトウェアの規模が大きくなるにつれて複雑度は増加するため、次 ...
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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.