Software changes are often delivered by way of releases, where one or more components are bundled together and delivered to the end user as a collection of features or capabilities. And almost all software changes are promoted across a series of environments, before ultimately being sent to the production environment where they are consumed by the end user. This software delivery lifecycle generally requires approvals, resolution of conflicts within shared environments, and utilizes testing quality metrics when determining when the changes are ready to be promoted into the next environment. The planning and execution of such processes, while required, often slow down delivery rates and add cost to IT projects.
FlexDeploy helps facilitate rapid change using three key components:
Release – a software delivery milestone, containing a collection of related or unrelated projects enabling new or updated features/capabilities.
Release Snapshot – build versions (project versions) of the release's projects which are sent sent through the pipeline.
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Many snapshots may be executing within the pipeline in parallel, however, only one snapshot can execute the steps within a single stage at a time. Multiple snapshots may be within the gates for a single stage. If a snapshot makes its way through the gates for a stage, any snapshot in the gates created prior is set to out of date. For example, if three snapshots are executing gates within the DEV stage above, if the latest one makes its way through the gates first, the other two become out of date. If the snapshot created second makes its way through the gates first, the one created prior is set out of date, but the one created after it is still eligible to continue its way through the gates and on to the steps.
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