Skipper is a basic client server architecture. The server exposes a HTTP API that is used by the interactive shell. The server persists Package Metadata and Release state in a relational database.
Platforms are defined using Spring Boot’s Externalied Configuration feature. See the Chapter 11, Platforms section for more information on configuring the platfoms. The platforms map onto an instance of a Spring Cloud Deployer implementation which is what is repsonsible for deploying the applications.
The release workflow is currently a hard-coded blue/green workflow.
The plan is to use the Spring Cloud State Machine project to orchestrate the release workflow.