Not a kinesis expert here, but think the need to reprocess stuff could be the key. With kafka you can reprocess data just creating a different consumer group.

Not a kinesis expert here, but think the need to reprocess stuff could be the key. With kafka you can reprocess data just creating a different consumer group. You pay for instances. I guess in kinesis you need to move data from kinsesis to s3 and back to kinsesis to reprocess it, and it wil surely have a cost.