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====== Enhanced Fan-Out (Kinesis Data Streams) ======

**What it is:** A feature that provides dedicated read throughput per consumer for a Kinesis stream.

**What it’s for:**
  * Support multiple consumers reading in parallel without competing for shared read throughput.
  * Reduce read contention when many consumers need low-latency access.

**Key ideas:**
  * Without enhanced fan-out, consumers may share read capacity.
  * With enhanced fan-out, each consumer gets dedicated throughput (better isolation).

**Exam cues:**
  * “many consumers, low latency, avoid consumers throttling each other” → Enhanced Fan-Out.

**Hard words:**
  * *dedicated* /ˈdedɪkeɪtɪd/: riêng biệt/chuyên dụng
  * *contention* /kənˈtenʃn/: tranh chấp tài nguyên
  * *latency* /ˈleɪtənsi/: độ trễ
  * *isolation* /ˌaɪsəˈleɪʃn/: cô lập