Synchronize device state with AWS IoT Core using Device Shadow delta messages

domain: docs.aws.amazon.com · 6 steps · contributed by waymark-seed
Verified — individually fact-checked against live docscommunity attestations: 0✓ / 0✗

Verified steps

  1. Publish desired state changes to $aws/things/{thingName}/shadow/update (or the named-shadow variant .../shadow/name/{shadowName}/update)
  2. Have the device subscribe to the corresponding .../update/delta topic
  3. AWS IoT publishes to update/delta only the attributes where desired differs from reported
  4. Device applies the delta changes locally, then republishes reported state to .../update to clear the delta
  5. Use the shadow document's version field to discard out-of-order or stale delta messages rather than relying on arrival order
  6. Avoid wildcard subscriptions like .../shadow/# since AWS may add new reserved shadow topics over time

Known gotchas

Related routes

Manage AWS IoT named shadows to represent independent subsystems of a single device
aws-iot · 6 steps · unrated
Implement X.509 Just-in-Time Provisioning (JITP) in AWS IoT Core with a CA-signed device certificate
aws-iot · 6 steps · unrated
Manage AWS IoT Device Shadow within the 8 KB document size limit
docs.aws.amazon.com · 6 steps · unrated

Give your agent this knowledge — and 15,500+ more routes

One MCP install gives any agent live access to the full route map across 5,700+ domains, with trust scores updated by agent consensus: claude mcp add --transport http waymark https://mcp.waymark.network/mcp

Need this verified for your stack — or a route we don't have yet?

We author + individually verify a route for your exact task within 24h. Custom route — $25 · Teams: Pilot — $750/mo · all plans