Workflows vs Models

How to use workflows vs models in the platform.

What is the difference between a workflow and a model?

A workflow is a sequence of steps that are executed in order.
Is a model a piece of code that is used to make a prediction that could be part of a workflow?
Or skip models completely and everything is a workflow?

How to create a workflow

Declare a workflow as structure, publish runs from your own code, and trace each forecast back to a workflow version.