Agile vs Waterfall
A software development approach that values adaptability and continuous delivery.
| Agile | Waterfall | |
|---|---|---|
| Definition | Agile is a software development philosophy focused on continuously delivering value to customers through adaptability, collaboration, and quick response to change. | The Waterfall methodology is a linear and sequential approach to project management, characterized by its phase-by-phase structure, where each phase must be completed before moving on to the next. |
| Categories | agile | methodology, pmbok, pmi, pmp |
What is Agile?
A software development approach that values adaptability and continuous delivery.
Definition
Agile is a software development philosophy focused on continuously delivering value to customers through adaptability, collaboration, and quick response to change.
Origin
The origin of Agile dates back to the early 2000s, marked by a crucial event in 2001: the creation of the Agile Manifesto.
Movement
It started as a response to the limitations and challenges faced by traditional project-based software development methods, known as waterfall methodologies, which were sequential and inflexible.
Approach
Agile is based on an iterative and incremental development approach where the scope is divided into small parts with frequent deliveries, allowing for adaptation to changing requirements.
Collaboration
Agile focuses on team collaboration and customer involvement throughout development.
Benefits
It is known for improving product quality, employee and customer satisfaction, and development speed.
What is the Waterfall methodology?
It's a linear and sequential approach to project management.
Definition
The Waterfall methodology is a linear and sequential approach to project management, characterized by its phase-by-phase structure, where each phase must be completed before moving on to the next.
Structure
Projects are divided into distinct phases, with no overlap between them, resembling the flow of a waterfall.
Gantt Charts
Often visualized using Gantt charts, the Waterfall methodology is commonly used in industries like construction.
Limited Flexibility
Unlike agile frameworks, the Waterfall approach does not easily accommodate changes once a phase is completed, treating any change as a potential risk against the defined plan.
Phases
Waterfall typically has the following phases: requirement gathering, design, development, testing, deployment, and maintenance.
Requirement Gathering
The initial phase involves the detailed collection and documentation of all project requirements.
Design
This phase includes both high-level and detailed design work, specifying the system architecture and interfaces.
Implementation
The actual development work begins, based on the design specifications from the previous phase.
Testing
Each component is tested to ensure it meets the specified requirements and functions as intended.
Deployment
The completed project is deployed or released to end-users or customers.
Maintenance
Maintenance and ongoing support activities are carried out to ensure the project continues to function correctly.