An AWS IoT Immersion Day is a full-day, hands-on workshop that provides an opportunity to learn about AWS IoT services, how they work together, and how they can be used to build IoT applications. Here are some of the core highlights of an AWS IoT Immersion Day:

Introduction to AWS IoT: The workshop starts with an overview of AWS IoT services, including AWS IoT Core, AWS IoT Greengrass, AWS IoT FleetWise, and AWS IoT Analytics.

Architecture and Security: Participants will learn how to build a secure IoT architecture using AWS IoT services, including how to manage devices and data, as well as how to ensure data privacy and security.

Device Connectivity and Management: The workshop covers device connectivity and management, including how to connect devices to AWS IoT, how to manage device certificates, and how to use device shadows to manage device state.**

Data Ingestion and Analytics: Participants will learn how to ingest and process data from IoT devices using AWS IoT services such as AWS IoT Analytics**.

Hands-on Labs: The workshop includes hands-on labs where participants can put what they've learned into practice by building a simple IoT application using AWS IoT services.

Q&A Session: At the end of the workshop, there will be a Q&A session where participants can ask questions and get expert advice on building IoT applications with AWS IoT services.