Which service helps you connect devices and services that use different standards, such as units of measure and communication protocols?

• A. AWS IoT Things Graph
• B. AWS IoT SiteWise
• C. AWS IoT Greengrass
• D. AWS IoT 1-Click

Answer: (A)

Interoperability across devices and services with different standards is addressed by a service that lets you model how data should flow between components and automatically translate between protocols and data formats. AWS IoT Things Graph provides a visual graph-based interface where you place nodes for devices (things) and cloud services, and connect them with edges that define the data flow.

The key idea is that Things Graph handles the wiring and the translations between different protocols, units, and data models. You can connect a device speaking one protocol or unit to another component expecting something different, and the graph runtime takes care of the conversions and routing. This makes it easy to build integrations across heterogeneous devices and services without writing a lot of glue code.

For example, you could link a temperature sensor that publishes in one protocol and Celsius to a service that expects Fahrenheit and a different data format, with a conversion step included in the graph. This kind of cross-standard connectivity is exactly what Things Graph is designed to simplify.

The other options don’t focus on bridging multiple standards in this way: SiteWise is about collecting and modeling industrial asset data, Greengrass concentrates on edge computing and local Lambda execution, and IoT 1-Click is for simple device provisioning and purchase flows.