Answer: Buildout is an automation tool that is written in and extended with Python and is used for automating software assembly. Buildout can be applicable to all the software phases right from development to deployment.

This tool is based on 3 core principles:

Repeatability: It states project configuration developed in the same environment should produce the same result regardless of their history.

Componentization: Software service should include self-monitoring tools and should configure the monitoring system while product deployment.

Automation: Software deployment should be highly automated and time-saving.