sqs

Oldest offering (over 10 years old)

• Fully managed service, used to decouple applications

• Attributes:

• Unlimited throughput, unlimited number of messages in queue

• Default retention of messages: 4 days, maximum of 14 days

• Low latency (<10 ms on publish and receive)

• Limitation of 256KB per message sent

• Can have duplicate messages (at least once delivery, occasionally)

• Can have out of order messages (best effort ordering