noun
distributor (of information, content, etc.)
General term for someone who distributes or delivers information, content, or data, often via digital platforms.
彼はニュース配信者として多くの購読者を持っている。
He has many subscribers as a news distributor.
noun
Specifically refers to a person who streams live video or audio content online, such as on YouTube or Twitch.
人気の配信者が今夜ライブを行う。
A popular streamer will go live tonight.
ストリーマー is a direct loanword for 'streamer' and is often used interchangeably with 配信者 in online contexts, though 配信者 can also refer to non-live content distributors.
Compound of 配信 (distribution, streaming) + 者 (person).