An overview of software development including its importance, the software development lifecycle, and the role of software developers in creating applications.
Introduction to Software Development
Quick reference guide – concise, organized, and easy to read
| Aspect | Description |
|---|---|
| Definition | The systematic process of conceiving, designing, building, testing, and maintaining computer programs or applications. |
| Goal | Transform user needs or business requirements into functional, reliable, and maintainable software. |
| Key Stakeholders | • End‑users (customers) • Product owners / business analysts • Developers (frontend, backend, full‑stack) • QA/Test engineers • DevOps / operations teams • Project managers |
| Phase | Primary Activities | Typical Deliverables |
|---|---|---|
| 1. Requirements Gathering | • Interviews, surveys, workshops • Document functional & non‑functional needs |
Requirements Specification, User Stories, Use‑case diagrams |
| 2. Analysis & Planning | • Feasibility study • Scope definition • Estimation (time, cost, resources) |
Project charter, risk register, high‑level architecture |
| 3. Design | • System architecture (layers, components) • UI/UX mockups • Database schema |
Architecture diagrams, wireframes, API contracts |
| 4. Implementation (Coding) | • Write source code • Follow coding standards & guidelines • Version control (Git, Mercurial) |
Source repository, build scripts |
| 5. Testing | • Unit, integration, system, acceptance testing • Automated test suites, manual exploratory tests |
Test plans, test reports, defect logs |
| 6. Deployment | • Release packaging • Continuous Integration/Continuous Deployment (CI‑CD) pipelines • Environment provisioning (dev, staging, prod) |
Release notes, deployment scripts |
| 7. Maintenance & Support | • Bug fixing, performance tuning • Feature enhancements • Monitoring & incident response |
Patch releases, service‑level agreements (SLAs) |
Note: Different methodologies (Waterfall, Agile, DevOps, etc.) rearrange or iterate these phases.
| Methodology | Key Characteristics | When to Use |
|---|---|---|
| Waterfall | Linear, sequential; each phase completed before the next begins. | Small, well‑defined projects with stable requirements. |
| Agile (Scrum, Kanban) | Incremental delivery, frequent feedback, adaptive planning. | Projects with evolving requirements, cross‑functional teams. |
| Extreme Programming (XP) | Emphasizes test‑driven development, pair programming, continuous integration. | High‑quality codebases where rapid change is expected. |
| DevOps | Combines development & operations; automation of build, test, deploy, monitor. | Organizations seeking fast, reliable releases and continuous delivery. |
| Lean | Focus on waste elimination, delivering value quickly. | Start‑ups or teams aiming for minimal viable products (MVPs). |
| Category | Examples | Typical Use |
|---|---|---|
| Version Control | Git, Subversion (SVN) | Track changes, collaborate, branch/merge workflows. |
| Integrated Development Environments (IDEs) |