Introducing the fundamental concepts and processes involved in software development, including the software development life cycle, different development methodologies, and the role of a software developer in the industry.
Overview of Software Development
(A concise, high‑level guide for students, new hires, or anyone looking to understand the software creation process)
| Phase | Primary Activities | Typical Deliverables |
|---|---|---|
| 1. Requirements Gathering | • Stakeholder interviews • Market research • Use‑case & user‑story creation |
• Requirements specification (SRS) • Prioritized backlog |
| 2. Planning & Design | • Architecture selection (monolith, micro‑services, serverless) • UI/UX mockups • Technology stack decision |
• Architecture diagrams • Wireframes / prototypes • Project plan (timeline, resources) |
| 3. Implementation (Coding) | • Writing source code • Applying coding standards • Version‑control commits |
• Source repository (Git, Mercurial) • Build scripts (Maven, Gradle, npm) |
| 4. Testing & Quality Assurance | • Unit, integration, system, acceptance tests • Static analysis, code reviews • Automated test pipelines |
• Test suites & results • Defect reports • Test coverage metrics |
| 5. Deployment | • Packaging (containers, installers) • Release to staging/production • Configuration management |
• Release notes • Deployment scripts (Ansible, Terraform) |
| 6. Maintenance & Support | • Monitoring & logging • Bug fixing, security patches • Feature enhancements |
• Updated documentation • Service‑level reports |
The phases are often iterative (see Agile & DevOps).
| Methodology | Key Characteristics | When to Use |
|---|---|---|
| Waterfall | Linear, sequential; each phase must finish before the next begins. | Fixed scope, regulated environments (e.g., aerospace). |
| Agile (Scrum, Kanban) | Incremental delivery; short sprints, continuous feedback, adaptable scope. | Dynamic requirements, fast‑moving markets. |
| Lean | Focus on waste elimination, delivering value quickly. | Start‑ups, product‑centric teams. |
| DevOps | Merges development & operations; emphasizes automation, CI/CD, monitoring. | Cloud‑native, continuous delivery pipelines. |
| Hybrid (e.g., Scrumban) | Mixes elements from multiple approaches to fit specific contexts. | Large organizations needing flexibility. |
| Role | Core Responsibilities |
|---|---|
| Product Owner / Business Analyst | Define vision, prioritize backlog, translate business needs. |
| Software Architect | Design high‑level structure, choose technologies, ensure scalability. |
| Developer / Engineer | Write, review, and refactor code; implement features. |
| QA Engineer / Tester | Create and execute test plans, automate testing, ensure quality. |
| DevOps Engineer | Build CI/CD pipelines, manage infrastructure as code |