How to say "configuration" in Japanese

• コンフィギュレーションCommon
  nounThe English loanword, meaning 'the way a system is arranged or set up'; it carries a technical flavor and appears chiefly in computing, where 設定 often serves just as well.
• 配置はいちJLPT N1approx.Common
  noun, suru verb, transitive verbCovers 'configuration' as physical arrangement or placement: how parts, people, or resources are laid out, deployed, or positioned. It points to where things sit, not to settings or options.
  軍隊ぐんたいは戦闘せんとうの配置はいちで整列せいれつしていた。↗

  The troops were in battle array.
• 設定せっていJLPT N1approx.Common
  noun, suru verb, transitive verbThe word for configuration as settings: choosing options and preferences or setting up a device or system. For the computing sense of 'configuration' this is the word you want.
  鍵かぎのいらない暗証あんしょうタイプには、お好すきな番号ばんごうを設定せっていできるフリーダイヤル式しきと、あらかじめ番号ばんごうが設定せってい済ずみの固定こてい式しきとがあります。↗

  For code-type locks that don't need a key, there are 'free dial' systems where you can set any number you like, and fixed types where the number is set in advance.

Use 設定 for configuration as settings or setup of software and devices, 配置 for the physical arrangement or placement of parts and resources, and 「コンフィギュレーション」 as the technical loanword, mainly in computing.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• コンフィギュレーションconfiguration
• 配置はいちarrangement (of resources)
• 環境設定かんきょうせっていconfiguration (e.g. of a computer or file)
• コンフィグconfig
• 立体配置りったいはいち(molecular) configuration
• 設定せっていoptions setting