Release Train

Automating Release Management at Scale

In a large scale environment, a release can include infrastructure, operational and application changes. In Scaled Agile Framework (SAFe) language, the role of coordinating these changes is called the Release Train Engineer (RTE). In many organisations, the coordination of these changes is manual. Automation of this coordination extends the Autonomous Development, Authoritative Release approach to include all aspects of the solution.

Release Train Engineering objectives preserve Autonomous Development, while ensuring the development output assets extend beyond application development, and may include infrastructure, configuration management and test automation.

Fundamental to Release Train Engineering is a Desired State Engine. Examples of these include Terraform, Amazon Cloud Development Kit, Azure Resource Manager/Bicep, Helmsman, Helmfile, Puppet, Ansible, Octopus*.

Intermediary

An intermediary provides a decoupled solution to perform the deployment actions of the release, based on a triggering request from the pipeline. Intermediaries, also known as orchestrators, can provide state management persistence, state reporting and drift remediation.

• Octopus does not have a Desired State capability as such, but using a parent project, a release manifest can be constructed, and only child projects which have changed will be deployed. See detailed explanation in Octopus Deploy section.