Software Engineering

CSS CS Optional — Paper-I, Section-B, Topic V. Chapter 5 intro concept.

🔑 Definition

• Systematic application of engineering principles to: design, development, testing, deployment, maintenance of software.
• Treats software building as disciplined & measurable, not ad hoc coding.

📌 Why "Engineering"?

• Software is intangible, but still needs: reliability, maintainability, cost/schedule discipline.
• "Software crisis" (1960s–70s): projects late, over-budget, unreliable → historical reason SE became its own discipline.

🎯 Goals

• Meet functional + non-functional requirements.
• Deliver on time, within budget.
• Stay maintainable, reliable, scalable over its whole lifetime.

📋 Scope (each = own page)

• Requirements Engineering → Design → Implementation → Testing → Deployment → Maintenance → Evolution.

⚠️ MCQ Trap

• SE ≠ "just coding" — coding is one activity inside a much bigger disciplined process.