Audience
You are an Apigee Edge API proxy developer, or you would like to learn about developing APIs that run on Apigee Edge. At a minimum, we assume you're familiar with Apigee Edge and how to create simple API proxies. To learn more, we recommend this getting-started tutorial.
In the intro:
The link to the getting-started tutorial gives a 404. I'm guessing it should go here instead: https://docs.apigee.com/api-platform/get-started/get-started