I have heard of this term many times (in the context of programming) but couldn't find any explanation of what it meant. Any good articles or explanations?

I have heard of this term many times (in the context of programming) but couldn't find any explanation of what it meant. Any good articles or explanations?
リリース、障害情報などのサービスのお知らせ
最新の人気エントリーの配信
処理を実行中です
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lあとで読む
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