The Software Development Life Cycle (SDLC) is a structured process for planning, building, testing, and maintaining software. It helps teams deliver predictable outcomes and manage risks across projects.
Common SDLC models
- Waterfall: sequential phases, suited to well-defined requirements.
- Agile: iterative development with sprints, suited for changing requirements.
- DevOps/Continuous Delivery: integrates development and operations for fast, reliable releases.
- V-Model and Spiral: variations emphasizing testing or risk management.
SDLC phases
- Requirement analysis and planning.
- Design and architecture.
- Implementation (coding).
- Testing and QA.
- Deployment and release.
- Maintenance and monitoring.
Best practices
- Define acceptance criteria early.
- Automate testing and deployments.
- Maintain clear documentation and code reviews.
- Use metrics (lead time, cycle time, defect rate) to improve processes.
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