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In this article we’ll navigate through the creation of a Nested Stack in Cloudformation using the Java SDK. The child stack will be a lambda function, and the code will be uploaded with a zip archive.

What’s Cloudformation, and what’s a nested stack?

Cloudformation is the AWS offering of infrastructure as code. Instead of navigating the web UI adding and configuring resources, Cloudformation offers the capability of reading a user - supplied file (either JSON or YAML) containing the list of resources and their relationships and create them as the code states.
These resources must be grouped in Stacks, which is the parentmost object that Cloudformation can process.
Things get interesting when stacks reference other stacks, of course :-)