noun, noun which may take the genitive case particle 'no'
Japanese-language support
Used in software contexts to indicate that a program, interface, or system can handle Japanese text, menus, or documentation.
このアプリは日本語対応なので、設定を日本語に変更できます。
This app supports Japanese, so you can change the settings to Japanese.
日本語対応のソフトウェアを探しています。
I'm looking for software that supports Japanese.
Refers to multilingual support in general, while 日本語対応 specifically means Japanese-language support.
Compound of 日本語 (Japanese language) and 対応 (support, compatibility). A straightforward modern technical term.