Customers interact with their devices by sending commands using the Esper Console or APIs. In either case, all communication to their devices are routed via one of four communication channels that a device can use. These channels are:
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* AWS IOT Core
* FCM (Google Managed)
* MQTT
* HTTP

A complete domain name that specifies the exact location of a resource in a hierarchical DNS (Domain Name System) structure.

A protocol used for transmitting and receiving hypertext documents on the World Wide Web. HTTP is the foundation of data communication on the internet and defines how web browsers and servers interact.

Hypertext Transfer Protocol Secure. A secure version of HTTP that uses encryption to protect the data transmitted between a web browser and a web server.

Message Queuing Telemetry Transport. A lightweight publish-subscribe messaging protocol designed for low-bandwidth, high-latency, or unreliable networks. MQTT is commonly used in IoT (Internet of Things).

Network Time Protocol. A protocol used to synchronize the clocks of systems on a network. NTP ensures that all systems have accurate and synchronized time.

Stream Control Transmission Protocol. A transport layer protocol that combines some of the features of both TCP and UDP. SCTP offers reliable, ordered, and multiplexed data transmission with congestion control and error detection.

Simple Network Time Protocol. A simplified version of NTP that provides basic time synchronization capabilities. SNTP is often used in situations where high accuracy is not critical.

Secure Sockets Layer. A cryptographic protocol that is used to establish secure and encrypted connections between a client and a server.

A stack is a physically isolated infrastructure which can be used to create multiple customer Tenants. All customer Tenants in a stack share the same compute and storage resources.

Transmission Control Protocol. A connection-oriented communication protocol that provides reliable and ordered data delivery between two systems over a network.

User Datagram Protocol. A connectionless communication protocol that provides faster, but less reliable, data transmission compared to TCP.

An FQDN that can stand in for other FQDNs. It allows all variations of the subdomain. For example, the FQDN wildcard *.esper.cloud would allow dpcdownloads.esper.cloud, ping.esper.cloud, mqtt.esper.cloud, etc.