Software Development Methodologies
Methodologies are frameworks for organizing development work. Each has different philosophies about planning, flexibility, and iteration.
1Common Methodologies
Waterfall Sequential, plan-driven approach.
Flow: Requirements → Design → Development → Testing → Deployment → Maintenance
- Characteristics:
- Detailed upfront planning
- Changes are expensive (late in cycle)
- Works well when requirements are clear and stable
- Traditional, command-and-control management
Best for: Regulated industries, hardware projects, fixed contracts.
Agile Iterative, collaborative approach with frequent feedback.
- Principles:
- Individuals and interactions over processes
- Working software over documentation
- Customer collaboration over contracts
- Responding to change over following a plan
Iterative cycles (sprints): 1-4 weeks Each sprint: Plan → Design → Code → Test → Review
Benefits: Fast feedback, flexibility, team collaboration.
Scrum (most popular Agile) Framework with defined roles and ceremonies.
- Roles:
- Product Owner: prioritizes features
- Scrum Master: removes blockers, coaches team
- Development Team: builds the product
- Ceremonies:
- Sprint Planning: choose work for sprint
- Daily Standup: 15-min sync
- Sprint Review: demo completed work
- Retrospective: team improvement
Kanban Flow-based, continuous delivery approach.
- Key concepts:
- Visualize work (Kanban board: To Do → In Progress → Done)
- Limit work in progress (WIP limits)
- Manage flow (move items through states)
- Continuous delivery (no fixed sprints)
Best for: Support teams, variable workload, DevOps pipelines.
DevOps Combines development and operations for continuous delivery.
- Practices:
- Automation (testing, deployment)
- Monitoring and logging
- Infrastructure as Code
- Rapid feedback cycles
- Shared responsibility
Focus: Speed, reliability, continuous improvement.
Lean Development Eliminate waste, optimize flow.
- Principles:
- Eliminate waste (unnecessary features, meetings)
- Amplify learning (quick feedback)
- Decide late (keep options open)
- Deliver fast (short cycles)
- Empower team (make decisions locally)
- Build quality in (prevent defects)
- See the whole (system thinking)
Extreme Programming (XP) Technical practices for quality code.
- Practices:
- Pair programming (two developers, one computer)
- Test-driven development (write tests first)
- Continuous integration (commit frequently)
- Refactoring (improve code continuously)
- Simple design (YAGNI: You Aren't Gonna Need It)
Rapid Application Development (RAD) Build working prototypes quickly.
- Approach:
- Use visual development tools
- Reusable components
- Iterative development
- User involvement throughout
Good for: Time-sensitive projects, business applications.
Explore the Full Portfolio
This is the complete portfolio of Sufi Khan Sulaiman, a technology leader specialising in B2B commerce and digital automation. Start from the Home page for the overview, then move through two decades of career experience across FLIR Systems, Lorex Technology, and 1c Platform, and the full catalogue of project case studies spanning headless commerce migrations, AI recommendation engines, and multi-channel fulfilment systems.
The skills and certifications page maps the technical and leadership capabilities behind the work, while the articles and the knowledge base break down the thinking into actionable frameworks. For hands-on learning, the tutorials and applications sections cover practical builds from front-end fundamentals to full-stack web apps.
For consulting engagement, the expertise page outlines service offerings, the ecommerce hub covers platform architecture and automation strategy, and the ecommerce guide (PDF) is a downloadable 55-page field manual. When you are ready to talk, the contact page is the direct line.