# SDLC

The five phases of the software development lifecycle (requirements, design, code, test, deploy), and how Agile and test-driven development change their order.

![Cheat sheet: SDLC](https://fsdtrainingmedia.blob.core.windows.net/public/images/2026/11/b646545214bc466d9f618153a467cb6f.webp)

- Category: Software Development
- Level: Novice
- Tags: agile, Software Development Lifecycle (SDLC), Test-Driven Development, unit testing
- Updated: November 3, 2026

Source: https://www.ask-codey.com/cheat-sheets/sdlc-cheat-sheet