February 15, 2005

エンタープライズ・アーキテクチャ

エンタープライズ・アーキテクチャなるものがあるらしい。

全体が広大すぎて全体像すら把握出来ていないのだが、ちょっと思いついたことを書いてみたりする。

絶対、世間ウケはしないネタですな(w

エンタープライズ・アーキテクチャ自体は自分的にやりたいことに重なる部分が多い。

結局のところ、企業自体をシステム化してしまうことだと感じた。
システム化というのは、何もコンピュータシステムを導入することだけを指すのではなく、企業に属する人も含めてシステマチックな組織にしてやろうというノリに思える。

参考の文献を探すと、企業トップの決断を迅速に末端に反映させたり、企業内のあらゆる情報を統括的に把握する仕組みを作ったりするような感じで書かれている。

こういった考え自体は昔からあるのだろうけど、ガイドライン的にフレームワークを適用して系統立てて扱うことに新しさがあるだけなのかもしれな。


現時点で気になった点を列記して行く。

企業の仕組みをボトムアップ的ではなく、トップダウン的に制御可能にするというのは、企業規模が急速に大きい(大きくなる)場合には組織論として正しいような気がするが、下手なアーキテクチャを作ってしまうとそれに属する要員の主体性が失われてしまうような気がする。
各個人は部品ではなく人間であって、各個人が主体性を失った組織というのはあまり良くない気がするからだ。
現状の組織体系自体が、軍隊の組織体系を模して作られたものであろうから、これ以上行くと組織論の沼にハマって出られなくなりそうなので今は止めておこう。
その辺の答えはまだ自分の中で出ていないしネ。
エンタープライズ・アーキテクチャ行うに当って、個人の主体性を生かす組み上げ方というのもきっとあるんだろうな。

情報システムに特化した部分で行くと、メインフレームを中核として部分的に拡張され続けて来たシステムを、レガシー・マイグレーション等の手法によって整理し、TOCの削減を図るというのは分からなくない。
でも、リホスト等の機械的な移行であっても、その移行後の正当性をどうやって評価しているのだろうか?
結局のところ、現行システムに対しての分析を十分に行い、テストを実施する為には、莫大な労力を必要としてしまうのではないだろうか?

機械的な移行の技術がどれ程発達しているかが良く分かっていないだけなのかもしれない。


何にせよ、非常に興味ある分野なのでちょっと勉強してみる気になった。
結局、いままでやってきたシステム開発の考え方の延長であって、まったく新しい考え方ではないことはハッキリしたかも。
深化ではあるけども、進化ではないって感じでしょうか。
元になったザックスマンおじさんの理論も元の考え方は色彩論のゲーテとかが議論していた事を現代風に再解釈しただけという気もするし・・・。


システム屋としては、レガシーマイグレーションは仕事としてあまり面白くなさそうではあるな・・・(w

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