50 lines
2.0 KiB
Markdown
50 lines
2.0 KiB
Markdown
# Continuous Deployment
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## Definition
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Continuous Deployment (CD) is a DevOps practice where code changes that pass all automated tests are automatically deployed to production environments without manual intervention.
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## Key Characteristics
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### Across DevOps Maturity Levels
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| Maturity | CD Practice Level |
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|----------|-------------------|
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| Phase 1 | Manual deployments, milestone-based releases, no automation |
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| Phase 2 | Automation used to reduce release risks, but still requires manual triggers |
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| Phase 3 | Automated infrastructure provisioning, more frequent deployments possible |
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| Phase 4 | Continuous integration pipeline enables tangible business benefits; infrastructure and code managed through pipelines |
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| Phase 5 | Multiple deployments per day with high certainty and minimal risk; zero human intervention for code changes passing through the pipeline |
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### Core CD Elements
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- Automated deployment pipelines
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- Zero human intervention after code commit
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- High confidence in automation quality
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- Fast rollback capabilities
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- Progressive delivery strategies (canary, blue-green)
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- Real-time monitoring post-deployment
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## Relationship with Continuous Integration
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CD builds on CI. The full CI/CD pipeline:
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1. **CI** — Every code change triggers automated builds and tests
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2. **CD** — Changes passing CI are automatically deployed
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At Phase 5 maturity, the CI/CD pipeline achieves **continuous deployment** where code flows from commit to production automatically.
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## Business Impact
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- Faster time-to-market
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- Reduced release risk through smaller, incremental changes
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- Rapid feedback from production users
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- Higher team productivity
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- Competitive advantage through rapid iteration
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## Sources
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- [[sources/devops-maturity-model-from-traditional-it-to-advanced-devops.md]]
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- [[sources/cloud-devop-maturity-guideline.md]]
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## Related Concepts
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- [[concepts/CI-CD-Pipeline]]
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- [[concepts/Continuous-Integration]]
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- [[concepts/DevOps-Maturity]]
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- [[concepts/Infrastructure-as-Code]]
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- [[concepts/Error-Budget]]
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