A licensing microservice must hand independently processed transactional jobs to worker services without treating the traffic as an analytics log or as OCI resource automation. Which OCI service fits that consume-and-complete inbox?

The licensing microservice that must hand independently processed transactional jobs to worker services—without treating traffic as an analytics log or as OCI resource automation—fits OCI Queue. Queue is a managed serverless service for high-volume transactional messages: producers publish string payloads in an agreed format, consumers process units of work independently, and successful completion removes the message from the inbox. That consume-and-complete shape matches municipal licensing jobs that should not linger as a replayable telemetry bus. OCI Events is wrong here because every microservice job is not an OCI-emitted CloudEvent; Events targets resource-state changes OCI publishes, not application work tickets. OCI Streaming alone because Queue cannot carry JSON or XML string payloads is false—Queue carries producer-defined string bodies, while Streaming’s strength is partitioned append/replay for analytics-style buses rather than transactional inbox semantics. Using the Oracle Functions configuration store as a durable shared work inbox invents a messaging product Functions does not provide. Exam caveat: Queue retention (seconds to days within documented bounds) means undeleted jobs can expire; long-running municipal backlogs need retention and dead-letter planning, not infinite keep. Operational check: publish a sample licensing job, consume it from a worker, delete after success, and confirm a second consumer does not receive the same message—validating transactional completion rather than stream-style replay.