Classical deployment pattern
In a classical development and deployment environment, (monolithic) software moves in stages between environments culminating in a "feature release" like a dump truck delivering a load of dirt.
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Modern deployment patterns
In a Continuous Delivery environment, where testing is encouraged in "Production", changes are not delivered in a "big bang". It's possible to deploy features without exposing them to all users.
For example:
- Blue-green deployments
- Canary releases
- Dark launching
- A/B testing
- Progressive exposure or ring-based deployment
- Feature toggles