ThingSpeak is a cloud service for collecting, storing and analysing live sensor data. Devices send readings through REST or MQTT APIs; the service stores them in private channels, can share selected data publicly and offers charts and dashboards. Users can run analysis with MATLAB, send alerts and schedule events. The service works with common hardware such as Arduino, Raspberry Pi and ESP32 boards and with LoRaWAN networks. It is offered as a hosted SaaS service.
ThingSpeak is operated by The MathWorks, Inc., a privately held US company headquartered in Natick, Massachusetts. Because the operator is based in the United States, US law may apply to the service regardless of where the servers are located. The vendor page does not state a storage region for ThingSpeak data and does not describe the service as open source; the Arduino communication library is published on GitHub. European organisations that need data sovereignty should confirm the storage location in writing, or consider an EU-hosted or self-managed IoT platform for sensitive sensor data.