this explains my exploration with the many and somewhat confusing services on AWS
although i have used some of AWS services in the past, the IoT portion is new to me
After referring to the FreeRTOS getting started guide with PSoC 6, i list down the important components
IoT core Thing
Lambda -> this is used to create function or micro service without configuring the EC2 or ECS instance. A simple EC2 instance with the other stuff will set the user back by at least US$35+ a month based on my previous usage fw years ago. In order to interact with Amazon Alexa devices, we need to use Lambda function
DynamoDB -> this is to store database in a database manner. it is NoSQL base. i haven't used it before.
The above can be understood further by some blogs https://aws.amazon.com/blogs/startups/building-dynamic-dashboards-using-lambda-and-dynamodb-streams-part-1/
or developer guide at https://docs.aws.amazon.com/iot/latest/developerguide/iot-gs.html
one can also follow some youtube https://www.youtube.com/results?search_query=aws+iot+reinvent on the re:invent series
S3 -> this is kind of storage for large file like image, video which are not suitable to be stored on DynamoDB
The confusing part is that there seems to be more than this
Greengrass-> With AWS IoT Greengrass, connected devices can run AWS Lambda functions, Docker containers, or both, execute predictions based on machine learning models, keep device data in sync, and communicate with other devices securely – even when not connected to the Internet.
AWS IoT SiteWise (preview) -> although in preview stage, the benefit is that it comes with capability to plot graph other than aggregating IoT data. In short it can collect, store, organize and monitor data, without us needed to use multiple services