Cloud Pub&#x2F;Sub is really a competitor to Amazon SQS, not Kinesis. It&#x27;s more helpful to think of Kafka and Kinesis as databases containing first-class, immutable streams; writing to the streams and reading from the streams are completely decoupled, unlike in a traditional pub-sub system. Jay Kreps&#x27; blog post explains it better than I can:<p><a href="https:&#x2F;&#x2F;engineering.linkedin.com&#x2F;distributed-systems&#x2F;log-what-every-software-engineer-should-know-about-real-time-datas-unifying" rel="nofollow">https:&#x2F;&#x2F;engineering.linkedin.com&#x2F;distributed-systems&#x2F;log-wha...</a>