Software Engineering through the SDLC Lens

Analyse, design, and evaluate software systems across the full software development lifecycle

Every Decision Has a Downstream Cost

Software engineering is not a sequence of independent phases — decisions made early ripple forward through design, implementation, testing, and deployment. Select a scenario below to trace the cascade of consequences across the SDLC.

Late Requirement Change
A key stakeholder requests a significant change to core functionality mid-sprint.
Security Vulnerability Found
A critical security flaw is discovered during system testing, weeks before planned release.
Production Deployment Fails
A release to production causes a critical failure; the system must be rolled back immediately.
Requirements
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Select a scenario above
Design
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Build
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Test
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Deploy
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Key Insight

Course Structure

Ten units across five phases — each building analytical depth and applying it to a running case study that threads through the full lifecycle.

Phase 1 — Foundations
Units 1–2

Software engineering as a discipline. SDLC stages and lifecycle thinking. Development methodologies and process trade-offs.

Phase 2 — Requirements & Analysis
Units 3–4

Advanced requirements engineering. Behavioural modelling with use case, activity, and sequence diagrams.

Phase 3 — Architecture, Design & Development
Units 5–7

Software architecture and design trade-offs. UML and model-driven design. Implementation, collaboration, and DevOps practices.

Phase 4 — Quality, Security & Evolution
Units 8–9

Testing, reliability, and quality assurance. Deployment strategies, security-aware engineering, and system evolution.

Phase 5 — Critical Evaluation & Professional Practice
Unit 10

Evidence-based critique of SE decisions. Risk, failure analysis, ethical obligations, and reflective professional practice.

Unit 1
SE & the SDLC
Unit 2
Methodologies
Unit 3
Requirements Engineering
Unit 4
Behavioural Modelling
Unit 5
Architecture & Design
Unit 6
UML & Documentation
Unit 7
Implementation & DevOps
Unit 8
Testing & Quality
Unit 9
Deployment & Security
Unit 10
Critical Evaluation
Start Course — Unit 1