transmission security; The official module baetyl-hub provides message subscription and publishing functions based on the MQTT protocol [http://docs.oasis-open.org/mqtt/mqtt/v3.1.1/os/mqtt- v3.1.1-os.html] Service. Service: Refers to a set of running programs that managed by Baetyl to provide specific functions such as message routing services, function computing services, micro-services, etc. Instance: Refers baetyl-function-python36 provides Python functions similar to Baidu CFC [https://cloud.baidu.com/product/cfc.html], where users can handle messages by writing their own functions. It is very flexible to use for

transmission security; • The official module baetyl-hub provides message subscription and publishing functions based on the MQTT protocol, and supports four access methods: TCP, SSL, WS, and WSS; • The official Service. • Service: Refers to a set of running programs that managed by Baetyl to provide specific functions such as message routing services, function computing services, micro-services, etc. • Instance: baetyl-function-python36 baetyl-function-python36 provides Python functions similar to Baidu CFC, where users can handle mes- sages by writing their own functions. It is very flexible to use for filtering, converting

transmission security; • The official module baetyl-hub provides message subscription and publishing functions based on the MQTT protocol, and supports four access methods: TCP, SSL, WS, and WSS; • The official Service. • Service: Refers to a set of running programs that managed by Baetyl to provide specific functions such as message routing services, function computing services, micro-services, etc. • Instance: baetyl-function-python36 baetyl-function-python36 provides Python functions similar to Baidu CFC, where users can handle mes- sages by writing their own functions. It is very flexible to use for filtering, converting

transmission security; The official module baetyl-hub provides message subscription and publishing functions based on the MQTT protocol [http://docs.oasis-open.org/mqtt/mqtt/v3.1.1/os/mqtt- v3.1.1-os.html] Service. Service: Refers to a set of running programs that managed by Baetyl to provide specific functions such as message routing services, function computing services, micro-services, etc. Instance: Refers baetyl-function-python36 provides Python functions similar to Baidu CFC [https://cloud.baidu.com/product/cfc.html], where users can handle messages by writing their own functions. It is very flexible to use for