How to say "via" in Japanese

• ことによってCommon
  expressionCovers 'via' when the means is an action — 'by doing something' — rather than a single noun: what gets the result is the doing itself. The fuller counterpart of ことにより, with essentially the same meaning.
  私は本ほんを読よむことによって知識ちしきを得うる。↗

  I get knowledge by reading books.
• 通じてつうじてCommon
  adverbCovers 'via' in the 'through' sense: something reaches a person or place by way of a channel, medium, or intermediary. Typical when contact or information travels through such a go-between rather than directly.
  カタログを通つうじて郵便ゆうびんで買い物かいものをすることによって、人々ひとびとは幅広はばひろい商品しょうひんを選えらぶことが出来できる。↗

  Shopping by mail through catalogs gives people a wide choice of merchandise.
• によってCommon
  expressionThe plain 'by (means of)' choice when the means is a simple noun; it also covers 'according to' and 'due to', so context decides which relation is meant.
  人ひとの生活様式せいかつようしきの大半たいはんはお金かねによって決きまる。↗

  One's lifestyle is largely determined by money.
• ことによりCommon
  expressionThe shorter counterpart of ことによって, with the same 'by doing / by means of / via' sense: the means is again an action, and either form is acceptable.

Choose 「によって」 for 'by (means of)' with a plain noun, 「ことによって」 or 「ことにより」 when the means is an action ('by doing'), and 「通じて」 when something passes through a medium or intermediary; the two こと forms are near-equivalent.

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

• ことによってvia
• 通じてつうじてthrough
• によってaccording to
• ことによりby (means of)
• を介してをかいしてthrough (e.g. an intermediary, a medium)
• 日本車両検査協会にっぽんしゃりょうけんさきょうかいJapan Vehicle Inspection Association
• 経てへてthrough
• 回りまわりby way of