The important choice is not which queue has the longest feature list. It is where a failed reservation expiry waits, and how the worker proves that running the expiry twice has the same result as running it once. For an edtech hold window, Azure Service Bus is the better fit when deferred delivery and granular retry policy are central; AWS SQS is the easier fit when the rest of the system already lives in AWS. A small, repeatable test can settle the choice before production traffic does.

Infrai belongs in the same test when one key and one REST contract could simplify the handoff between a scheduler, a queue, and adjacent search work.…