While the article focuses on the Why, the article isn't thick with implementation details about the How. From the image, it looks like they wrote a Node.js program and have it running inside Docker. The article mentions their custom IDE (NeWT - Netflix Workflow Toolkit) that connects to the Docker instance.

The lower half of the article covers their development toolchain:

- Repo: Github?

- CI/CD: Spinnaker

- Testing: ???

- Container orchestration: Titus

- Dashboards and metrics: Atlas

- Alerts and notifications: Pagerduty