Software Development Lifecycle

Real-Life Example: Food Delivery App (like Uber Eats or DoorDash)

1. Planning

Goal: Understand what the business and users need.

Activities: - Conduct market research to identify user demands (e.g., real-time tracking). - Define project scope, cost, and timeline. - Decide on platforms (Android, iOS, web).

Deliverables: Project plan, feasibility study, requirements outline.

2. Requirements Analysis

Goal: Gather detailed requirements from stakeholders.

Activities: - Interview restaurant partners, drivers, and customers. - Write user stories:

• “As a customer, I want to track my order so I know when it will arrive.”

• “As a driver, I want to receive route suggestions for faster delivery.”

Deliverables: Software Requirements Specification (SRS) document.

3. Design

Goal: Plan how the system will look and function technically.

Activities: - UI/UX team creates wireframes and mockups for the app. - Developers design system architecture:

• Frontend (mobile app)

• Backend (APIs, database, authentication)

• Integrations (maps, payment gateways)

Deliverables: Design documents, database schema, prototypes.

4. Implementation (Development)

Goal: Build the actual product.

Activities: - Developers write code for the customer, restaurant, and driver apps. - Backend team builds APIs and sets up servers. - Use version control (Git) for collaboration.

Deliverables: Working code modules, initial builds.

5. Testing

Goal: Ensure the software works correctly and is bug-free.

Activities: - QA team runs test cases for login, order placement, and payments. - Conduct usability testing with real users. - Fix bugs and optimize performance.

Deliverables: Test reports, bug fixes, stable release candidate.

6. Deployment

Goal: Release the app for public use.

Activities: - Deploy the backend to cloud servers (AWS, Google Cloud). - Publish apps on Google Play and the App Store. - Monitor performance and gather user feedback.

Deliverables: Live version of the app.

7. Maintenance

Goal: Keep the app running smoothly and up to date.

Activities: - Monitor for crashes and security issues. - Release updates with new features (e.g., coupon system). - Fix bugs reported by users.

Deliverables: Updated versions, performance reports, ongoing support.

Summary Table

Phase	Main Activities	Example Deliverable
Planning	Define goals and scope	Project Plan
Requirements	Gather user needs	SRS Document
Design	Create architecture and UI	Wireframes, Schematics
Implementation	Write and integrate code	Working App
Testing	Find and fix bugs	Test Reports
Deployment	Release product	Live App
Maintenance	Update and support	New Features, Bug Fixes