コードを書く前に設計を──時間・費用・戦略を守る最短ルート

Software Development

15

7月, 2025

プロジェクト成功の鍵は「早い段階での明確化」。CEOやCTOが口をそろえて言うように、最初の設計が「こんなはずじゃなかった」を防ぎます。

設計は技術戦略の設計図

図面なしで家を建てないように、設計なしでシステムを作れば混乱は必至。問題定義、ユーザー理解、アーキテクチャ設計をコード以前に行うことで投資を守ります。

設計フェーズがもたらす具体的メリット

  • 本質的な課題を把握 – 無駄な推測を排除

  • 予算に合った技術選定 – オーバースペックなサーバー費を防止

  • 正確な工数見積もり – 行き当たりばったりを排除し、納期短縮

  • 再作業を回避 – コストの二重化を防ぐ

  • 壊さず拡張 – 設計図があればモジュール追加が容易

AI × 設計 = 超高速PDCA

AIは要件分析、図面作成、データモデル提案を数分で実行。とはいえ「現場感」はゼロ。使いどころが肝心です。

AIが得意な領域

人間の判断が不可欠な領域

アイデア → ペルソナ/ユーザーストーリー化

高齢者向けUXなど共感が必要な分野

アーキテクチャ／DBダイアグラム提案

医療・金融などミスが致命的な領域

画面プロトタイプの自動生成

ビジネスモデルに直結する戦略判断

設計決定のドキュメント化

ブランド価値を左右する重要決定

判断基準: 「失敗コスト」と「文脈」。リバーシブルな失敗ならAIに任せ、致命的影響がある場合は必ず人がレビュー。

 

コーディング前の5ステップ

  1. ディスカバリー – ユーザーインタビューで課題を一文に凝縮
  2. バリューマップ – 事業目標と機能をリンク
  3. 基盤アーキテクチャ – レイヤー、データフロー、依存関係を可視化
  4. プロトタイピング – 画面を操作してリアルなフィードバックを収集
  5. アジャイルロードマップ – ストーリー優先度とリソースを精密見積もり

手戻りゼロ、行き当たりばったりゼロ。

実績：リスク減・スピード増

  • 開発期間-30％ – 明確な指示でコーディングが加速

  • コスト超過-40％ – 再作業と移行コストを大幅削減

  • 投資家の信頼向上 – 資金調達に強い「見える化」

  • スケール保証 – 事業成長に合わせてシステムも成長

業界差はあれど、「早期設計 = 投資保護」の法則は普遍です。

作る量を減らし、価値を最大化

コードは費用、設計は価値。AIの力を借りつつ、人間の判断で舵を取る——それが堅牢なプロダクトと安全なスケールへの最短距離です。

➡️ 無料ディスカバリーセッションを予約し、アイデアを実行可能なプランへ
（初回ミーティング担当：Reunion inicial :: Sindy Natalia - Sindy Natalia Mera Delgado

Natalia Mera

ソフトウェアプロジェクト管理の専門家e @Natalia Mera

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