Via
noun, verbal noun
You pass through somewhere for a reason, so you're going via that place.
けいゆ
This is a jukugo word that uses the on'yomi readings of the kanji. You learned this reading for 経 with the kanji, and you learned this reading for 由 with the word 由来. If you need an extra reminder for that one, here's a mnemonic just in case: If you're going via an unfamiliar place, I recommend you seek out a yurt (ゆ) to stay in. Wherever it is you're going via, you can't go wrong if you stay in a yurt.
そのお店なら、大阪経由でも京都経由でも行けますよ。
If you want to go to that restaurant, you can go there via Osaka or Kyoto.
最近はSNS経由でちょこちょこお仕事をもらえるようになってきました。
Recently, I have been getting a little bit of work via social media.
旅館の予約は、インターネット経由で行うのが一番いいと思う。
I think it's best to book your inn via the internet.