Methodology
Agile vs Waterfall
The defining choice in delivery approach: iterate and adapt, or plan up front and execute in sequence.
| Agile | Waterfall | |
|---|---|---|
| Approach | Iterative, incremental | Sequential, phase-gated |
| Requirements | Evolve throughout | Fixed up front |
| Delivery | Frequent, small increments | One delivery at the end |
| Change | Expected and cheap | Discouraged and costly |
| Best for | Uncertain, fast-changing work | Stable, well-defined work |
| Visibility | Continuous via working product | Via documents and phase gates |
The verdict
Choose Agile when requirements are uncertain and feedback would change what you build; choose Waterfall when scope is stable and predictability is paramount. Many teams land on a hybrid.