Apache Subversionの差別化要因について、Apache Subversion公式のofficial project documentation ('the Subversion Book') — explicitly linked from and called 'the official Subversion documentation' by subversion.apache.org's own docs index page, though hosted on the community book site svnbook.red-bean.com（https://svnbook.red-bean.com/en/1.7/svn.advanced.locking.html）で確認できます。The existing P-06 recommendation cites Subversion's suitability for large binary assets in general terms (access control, track record) but never explains the concrete mechanism (locking / lock-modify-unlock) that actually solves the binary-merge-conflict problem, so this is a genuinely new, more technical angle on the same underlying capability, and also directly confirms the official 'File locking' feature bullet listed on subversion.apache.org/features.html.具体的には「Apache Subversion provides an optional exclusive file-locking (lock-modify-unlock) mechanism specifically to prevent wasted work on unmergeable file types such as binary images: a user can claim an exclusive lock on a file before editing it, guaranteeing their eventual commit will succeed instead of being blocked by an unresolvable merge conflict.」といった記載が確認できます。限界として、この差別化要因の記述は当該Sourceの時点の位置づけであり、競合状況の変化を反映しない可能性があります。 This documentation dates from the Subversion 1.7-era edition of the book; while file locking remains a supported core feature in current Subversion releases, this specific page was not re-verified against the very latest version's release notes, so exact UI/command details could have minor updates since this edition was written.Current Statusとして、2026年08月23日に当該Sourceを取得し、上記の内容を確認しました。Source種別としては、これは提供元自身による自社情報の公表であり、第三者による独立した評価や市場での位置づけとは性質が異なります。