TRIM_HORIZON vs LATEST

Question

I can\'t find in the formal documentation of AWS Kinesis any explicit reference between TRIM_HORIZON and the checkpoint, and also

Answer 1

AT_TIMESTAMP

-- from specific time stamp

TRIM_HORIZON

-- all the available messages in Kinesis stream from the beginning (same as earliest in Kafka)

LATEST

-- from the latest messages , i.e current message that just came into Kinesis/Kafka and all the incoming messages from that time onwords