SDLC (Software Development Life Cycle) is the software development process from planning to maintenance.

What is SDLC?

SDLC is a framework that describes the phases of software development, from initial conception to maintenance and eventual retirement.

SDLC Phases

1. Planning

  • Requirements: Requirements analysis
  • Feasibility: Feasibility study
  • Resources: Resource planning
  • Schedule: Project schedule

2. Analysis

  • Functional requirements: Functional requirements
  • Non-functional requirements: Non-functional requirements
  • Specifications: Technical specifications
  • Validation: Requirements validation

3. Design

  • Architecture: Architecture design
  • Interface: Interface design
  • Database: Database design
  • Security: Security design

4. Implementation

  • Coding: Code development
  • Testing: Unit testing
  • Integration: Component integration
  • Documentation: Technical documentation

5. Testing

  • Unit Testing: Unit testing
  • Integration Testing: Integration testing
  • System Testing: System testing
  • User Acceptance Testing: User acceptance testing

6. Deployment

  • Installation: Production installation
  • Configuration: System configuration
  • Migration: Data migration
  • Go-live: Production launch

7. Maintenance

  • Support: Technical support
  • Updates: Updates
  • Patches: Security patches
  • Improvements: Functional improvements

Methodologies

Waterfall

  • Sequential: Sequential phases
  • Documentation: Extensive documentation
  • Control: Strict control
  • Risk: High risk

Iterative

  • Iterations: Development by iterations
  • Feedback: Continuous feedback
  • Flexibility: Greater flexibility
  • Risk: Reduced risk

Agile

  • Collaboration: Close collaboration
  • Response: Response to change
  • Individuals: Individuals and interactions
  • Working: Working software

DevOps

  • Integration: Continuous integration
  • Deployment: Continuous deployment
  • Automation: Automation
  • Collaboration: Team collaboration

Tools

Project Management

  • Jira: Project management
  • Azure DevOps: Azure DevOps
  • GitLab: DevOps platform
  • GitHub: Code management

Development

  • IDEs: Development environments
  • Version Control: Version control
  • CI/CD: Integration and deployment
  • Testing: Testing tools

Monitoring

  • APM: Application Performance Monitoring
  • Logs: Log analysis
  • Metrics: Application metrics
  • Alerts: Alert systems

Best Practices

Planning

  • Requirements: Define clear requirements
  • Resources: Assign appropriate resources
  • Schedule: Realistic schedule
  • Risks: Identify and mitigate risks

Development

  • Code: Clean and maintainable code
  • Testing: Exhaustive testing
  • Documentation: Adequate documentation
  • Security: Security by design

Deployment

  • Automation: Automate deployments
  • Rollback: Rollback plans
  • Monitoring: Post-deployment monitoring
  • Support: Post-deployment support

References