Agile and waterfall are two well-known project management approaches. Although they are both well-liked in the software development industry, each is most effective for a particular kind of project.

There are various distinctions between the two, but the primary one is that while Agile encourages the team to work concurrently on several project phases, the traditional waterfall is a linear style of working that demands the team to complete each phase of the project  before moving on to the next one.

This blog will focus on why the Agile methodology is gaining popularity and why it is preferred over the traditional waterfall approach. We will discuss what is agile and waterfall methodology, the difference between the two, and much more. Let’s get started.

What is the Agile Methodology?

Agile is a technique that encourages ongoing testing and development throughout the project’s software development lifecycle. Development and testing processes coexist in the agile software testing approach.

Agile project management techniques divide projects into smaller iterations or components that do not directly involve long-term planning. The project’s requirements and scope are established at the start of the development phase.

  • Approach: Frequent interaction with stakeholders
  • Flexibility: High
  • Requirements: Team initiative and short-term deadlines

The agile technique was created, in response to the more strict structure of Waterfall. As a result, It’s a far more flexible project management technique.

It was created as an approach that accepts absorbing changes of direction even late in the process and taking stakeholders’ comments into consideration at all times.

Agile involves the team working on several project phases simultaneously, frequently with tight deadlines. In addition, the team determines the project’s direction rather than a project manager. It empowers the team to be motivated and more productive, but also requires a more self-directed team.

What is the Traditional Waterfall Methodology?

The waterfall methodology is a project management strategy that emphasizes a straight line from the start of a project to its completion.

Since the Waterfall Model is applied sequentially, the project development team can proceed to the following stage of development or testing only when the previous stage has been successfully completed.

Traditional Waterfall Approach

This strategy places a heavy emphasis on meticulous planning, thorough documentation, and systematic implementation.

  • Approach: Pre-determined goals and outcomes
  • Flexibility: Low
  • Requirements: Completing deliverables to progress to the next phase

The linear approach to project management, also known as the waterfall methodology, is best suited for tasks when the desired outcome is known from the outset. The requirements for moving on to the next phase are outlined in the clear expectations for the project and the deliverables of each stage.

The amount and caliber of work done upfront, including the documentation of all features, variations, user stories, and user interfaces, is what determines how well the Waterfall process works.

For its low flexibility, the agile methodology is preferred over the waterfall methodology for easy adaptation, encouraging experimentation, and being able to work on the changes even in later phases of the project.

Difference Between Agile and Waterfall Methodology

Let us now look at the difference between agile and waterfall models:

Agile

Waterfall

The project development lifecycle is divided into sprints. There are various phases to the software development process.
It takes a gradual approach. Using the waterfall methodology, the design process is sequential.
Agile methodologies are renowned for their flexibility. Since the waterfall is an organized approach to software development, it can occasionally be rather inflexible.
Agile may be seen as a collection of numerous unique efforts. It will be finished as a single project.
Agile is a very adaptable strategy that permits modifications to the project development requirements even after the preliminary planning is finished. Once project development has begun, there is no room to change the requirements.
Planning, development, prototyping, and other software development phases may be repeated as a result of agile methodology’s iterative development strategy. In the Waterfall paradigm, every project development phase—including planning, developing, testing, etc.—is finished all at once.
It is anticipated that the requirements will change and develop. The approach works for projects with pre-planned needs and expected developments.
Agile presents a product mindset in which the software product meets the needs of its end users and evolves as necessary to accommodate those needs. This model exhibits a project mindset and entirely centers its attention on completing the project.
Prefers small, focused teams that are highly coordinated and synchronized. Team coordination/synchronization is very limited.

 

Laid out above are some major difference between agile and waterfall model.

To sum up, the waterfall method is suited for projects with a clear end objective. It does not allow for a lot of creativity and newer developments because of its extremely limited flexibility.

As the project progresses, Agile offers much flexibility for adaptation and course correction. It works well for projects whose results could require additional investigation or testing.

Evoking Business Agility

Advantages of Agile Methodology

The agile methodology is gaining increasing popularity for a variety of reasons. Let us discuss some benefits of the agile model which make it more renowned.

  • Software is continuously delivered using the Agile process.
  • Customers are happy since working software features are delivered to them after each Sprint.
  • Customers’ suggestions or changes to features can be accommodated in the product’s current iteration.
  • In this process, emphasis is placed on the product’s excellent design.
  • Even in the later stages of development, changes are tolerated.
  • By removing boundaries between departments and fostering a culture of trust and collaboration around shared objectives, an Agile/Scrum methodology can enhance organizational synergy.

Most organizations are transitioning from waterfall to agile methodology for better and faster solutions. You will have a better understanding when you read the drawbacks of using the waterfall approach.

Why Does DevOps Recommend Shift-Left Testing Principles?

FAQ- What Are the Downsides of Using the Traditional Waterfall Approach?

The following are a few downside of the traditional waterfall method:

  • With this historical approach rather than an iterative one, like the Agile method, projects may take longer to complete – it also makes it difficult to implement changes.
  • Clients frequently don’t fully understand what they want up front, leaving room for revisions and additional feature requests later on in the process when it’s more difficult to satisfy them.
  • The stages of design and implementation exclude clients.
  • Deadline creep occurs when one stage of the process is delayed, causing all subsequent stages to also be delayed.

Bottom Line

In conclusion, Agile and Waterfall models are two distinct project management techniques that are best suited for various project types – but we are sure the motto of this article is served — what is a downside of using the traditional waterfall approach.

All IT deployments used to be carried out using the waterfall process. The Agile revolution, however, followed.

Customers now value speed and agility in a changing world. They can no longer afford to be bound by lengthy IT initiatives that, once started, cannot be amended or adjusted.

As an alternative, Agile is better suited for teams who want to move quickly, experiment with direction, and start without knowing exactly how the project will turn out.

Agile is adaptable and calls for a cooperative and self-driven team as well as regular updates on the progress of stakeholders and business owners.

Conclusively, agile tends to give visibility, adaptability, accountability, and value at the start of the process while reducing risks throughout the project when it serves as the foundation for development.

Why Agile Software Development?

Author's Bio
Agilemania

Businesses transform when they realize that the current ways of working can no longer address the fast-changing market dynamics and rising user expectations. Agilemania, a small group of passionate Lean-Agile-DevOps consultants and trainers, is the most trusted brand for digital transformations in South and South-East Asia.