Part 4: Waterfall vs. Agile Models

Continuing my exploration of software development methodologies, I learned about two popular models: Waterfall and Agile. Let me break down these concepts along with their limitations.

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Waterfall Model

The Waterfall model is a linear and sequential approach. It progresses through well-defined phases, and each phase must be completed before moving to the next. Importantly, you cannot go back to a previous phase.

Limitations of the Waterfall Model

• Once you're in the testing phase, it’s challenging to revisit the concept phase to make changes.

• No working software is delivered until late in the process, which can delay feedback.

• It involves a high amount of risk and uncertainty, especially for complex projects.

Example

Imagine creating a website using the Waterfall model. If a design flaw is discovered during testing, addressing it would require restarting the process—a costly and time-consuming effort.

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Agile Model

Unlike the Waterfall model, Agile is flexible and emphasizes iterative development. Projects are divided into small, manageable units called sprints.

• At the end of each sprint, a working product is delivered, allowing for continuous feedback and improvement.

• Agile promotes collaboration between development teams and stakeholders, adapting to changes more effectively.

  

Limitations of the Agile Model

• It can be time-consuming as teams repeatedly refine and adjust the project.

• Requires a highly skilled team and constant communication to succeed.

Why Agile is Popular

Modern software companies prefer Agile for its flexibility and ability to adapt to changing requirements. Delivering small, functional increments ensures a higher chance of meeting user expectations.

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Key Takeaway

• Waterfall is ideal for projects with fixed requirements but comes with high risks due to its rigidity.

• Agile, though time-intensive, is better suited for dynamic and fast-paced projects, making it the go-to methodology in today’s software industry.

That wraps up my learnings for Day 1 (Part 2)! Stay tuned for more as I continue to explore these fascinating topics.