Which service provides an integrated set of tools that enable developers to connect devices and services that use different standards, such as units of measure and communication protocols?

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

Answer: (D)

Connecting devices and services that use different standards is about uniting heterogeneous components into a single workflow without forcing everyone to speak the same language. AWS IoT Things Graph does this by offering a visual development environment where devices and cloud services are modeled as nodes and connected with data flows. It provides a library of device models and connectors that translate between different protocols and data representations, so devices that use different communication methods or data formats can participate in the same application. This graph-based approach lets you wire together sensors, actuators, analytics services, and cloud tools, handling differences like units of measure and protocol nuances behind the scenes.

Other options aren’t built around this kind of cross-protocol integration. Lex is for building conversational chatbots; IoT SiteWise focuses on modeling and analyzing industrial assets and their data; IoT 1-Click is about simple provisioning and triggering actions for devices.