There are many limits for Cloud IoT core, ranging from project limits to device limits, and are split into three categories:
- Project, device, and telemetry limits: These limits refer to the number of devices per project, device metadata, telemetry event payloads, and MQTT connections per device.
- Rate: These limits refer to device-to-cloud and cloud-to-device throughput limits, MQTT incoming messages per second and per connection, and device manager API limits.
- Time: These limits refer to MQTT connection time and timeout limits.
We recommend that you refer to the Further reading section for more information.