Follow this step-by-step tutorial to build an Internet-of-Things (IoT) application with InfluxData client libraries and your favorite framework or language. In this tutorial, you'll use the InfluxDB API and client libraries to build a modern application as you learn the following: - InfluxDB core concepts. - How the application interacts with devices and InfluxDB. - How to authenticate apps and devices to the API. - How to install a client library. - How to write and query data in InfluxDB.