5.2 Agile vs. Waterfall | Choosing the Right Project Approach

5.2 Agile vs. Waterfall Methods

How you run your project can significantly impact its success.
Two of the most well-known approaches are Waterfall and Agile.

There is no universal “best” method—choosing the right one depends on your project's nature, scale, and required flexibility.
In this section, we’ll explore their characteristics, when to use them, and how to combine them effectively.


What is the Waterfall Model?

The Waterfall model progresses through phases—Requirements → Design → Development → Testing → Release—in a sequential, one-way flow.
Each step is completed and approved before moving on to the next.

Main Features

  • Clear processes, easy to manage and monitor
  • Linear flow: no step is skipped or revisited easily
  • Great for projects with well-defined scope and low change tolerance

Best Suited For

  • Projects with fixed requirements and minimal changes (e.g., internal IT infrastructure)
  • Industries requiring strict documentation or compliance (e.g., finance, healthcare)
  • Multi-vendor environments with clearly split responsibilities

What is the Agile Approach?

Agile divides the project into small cycles (iterations), and builds, tests, and adapts in quick loops.
Popular frameworks include Scrum and Kanban.

Main Features

  • Highly adaptable to change
  • Delivers working components early and often
  • Close communication between teams and stakeholders

Best Suited For

  • Projects with evolving requirements (e.g., new product development)
  • Need for fast feedback integration
  • Frequent alignment with stakeholders

Waterfall vs. Agile: Comparison Table

Aspect Waterfall Agile
Workflow Sequential and linear Iterative and incremental
Handling of Requirements Fixed upfront, hard to change Flexible, can evolve mid-project
Delivery Timing Single release at the end Partial, early releases possible
Communication Style Document-heavy, formal reviews Daily stand-ups and real-time discussion
Schedule Management Planned-heavy, milestone-driven Flexible, sprint-based planning

Hybrid Approach: Plan with Waterfall, Execute with Agile

Modern teams often blend both methods—a hybrid model—rather than strictly choosing one.

Examples include:

  • Milestone planning with Waterfall; actual work with Agile
  • Documentation under Waterfall; testing with Agile
  • Phase-level Waterfall structure; team-level Agile execution

This flexible mindset is especially helpful for large or multi-team projects.


ActionBridge’s Flexible Method Support

ActionBridge allows you to combine both methods naturally:

  • Plan tasks with Waterfall-like WBS structure
  • Move tasks between statuses in an Agile board view
  • Track macro timelines in Gantt view while iterating freely

This flexibility lets you design your approach based on your team's maturity and your project’s characteristics.


Conclusion: Let the Project Decide the Method

Agile and Waterfall are not rivals—they’re tools to be used wisely.

The key question is not “Which is better?” but “Which fits this project best?”
That mindset is at the heart of strategic project leadership and organizational agility.

→ Next: 5.3 Task Management Tools — Practical tools for executing your plans effectively.

Published on: 2025-07-30

Sho Shimoda

Sho has led and contributed to software projects for years, covering everything from planning and technical design to specification writing and implementation. He has authored extensive documentation, managed cross-functional teams, and brings practical insight into what truly works — and what doesn’t — in real-world project management.