Why is Agile methodology is better than waterfall?

If you work in project management, you know there are many different methods to choose from. Picking the right project methodology is critical to the success of your delivery. In this article, I’m going to discuss two project management approaches, Waterfall and Agile project management.

What is the Waterfall project management methodology?

Waterfall project management is a linear process with sequential phases.  A phase begins only once the previous stage is completed entirely. Waterfall project management was not initially designed for the software industry. It was used in areas like industries like manufacturing and construction, where the phases must happen sequentially. 

Because the process has no turning back, the project’s requirements and each team member’s role should be clear to everyone involved.

The phases usually progress in this manner:

1. Understanding requirements and documentation: All the necessary information is gathered, documented, and distributed to the team.
2. System design: The required programming language and hardware specs are formulated.
3. Implementation: The programmers do software coding.
4. Testing: Software testers find and report problems that are rectified.
5. Delivery: The product is released to the client
6. Maintenance: The client uses the product, and any issues that arise will be tackled by updating the software from the beginning

While the Waterfall methodology has its clear benefits, it fails when the requirements of the project are unclear

In such cases, an excellent alternative is an Agile methodology

What is the Agile methodology?

Agile methodology is a project management method with a systematic, iterative approach. Its aim is continuous releases and incorporating customer feedback with every iteration. Agile teams are designed to be agile in their development speed and respond well to market trends.

There are four Core Values in the Agile methodology.

1. Individuals and interactions over tools and processes: Even with superior technology, humans have a crucial role in project management. The Agile approach relies on communication between people rather than processes and tools.
2.  Working software over broad documentation: The Agile approach realizes that while documentation is essential, getting the software working is more critical.
3. Customer partnership over contract negotiation: The Agile approach to project management involves customers and getting feedback throughout the process.
4. Responding to change over following a plan: The truly unique aspect of the Agile approach is to accept that continuous change is part of the process and not something to be avoided. 

The basic processes in the Agile methodology are:

1. Project Planning: Before getting started, every team member should understand the end goal and how it is to be achieved.
2. Product roadmap creation: The components/ features of the final product will be planned. The individual features will be developed during each iteration (called a “Sprint”) in the process.
3. Release planning: When using Agile, features are released at the end of every Sprint. During release planning, a macro plan for feature releases is made. At the beginning of each Sprint, the release plan for that feature is reassessed
4. Sprint planning, review, and retrospective: These meetings are held at the beginning and end of each Sprint. They lay out plans and share the workload amongst the team. They also discuss product issues and solutions or changes.

Here is a comparison of the Waterfall and Agile methodologies

Read More: Waterfall Vs. Agile

Waterfall versus Agile: Why is Agile a clear winner?

Agile is less inclined to error

Waterfall relies heavily on the first step of its process: understanding requirements and documentation. Suppose even one of the conditions isn’t understood precisely, or there is a mistake in the documentation. In that case, it makes things impossible to rectify until much later in the development stage. Such massive errors don’t happen with Agile since requirements are checked and confirmed in steps throughout the project.  

In Agile, a block doesn’t mean a delay

Since the process is sequential in Waterfall, if an issue blocks one part of the process from moving forward, the whole process is stopped. With Agile, the team can work on something else on another part of the project if a blocking situation arises. Moreover, since team members work together during a Sprint, the software team shares skill sets, which adds flexibility. Work and time aren’t wasted if the project direction changes.

Agile engages more with the customer

In the Agile approach, the customer is not an outsider but is considered an integral part of the implementation team. The customer is included in each part of the process, from planning right up to delivery. In Waterfall, however, there is a lot of time spent and effort made with the customer at the beginning of the project to figure out and document the details of the requirements. However, after this, the customer isn’t involved until the product is ready. Customer feedback can, therefore, be built into the Agile process, but not with Waterfall.

Agile builds an initial working version for the customer

Since the process is sequential in Waterfall, returning to an initial point and changing something once a step is finished is challenging. Agile has built-in flexibility and makes improvements in stages. Initially, it builds a precursor version of the end product called the “Minimum Viable Product” (MVP), which has enough value and features that people are willing to buy it initially. Still, there’s also a feedback loop so the customer can decide how the future versions are built. The Waterfall method cannot keep up with market dynamics since the customer does not get the opportunity to see how an initial version works.  

Agile has superior testing

Testing of the product using the waterfall methodology is mainly done when the project is almost completed. Testing the product sometimes becomes redundant if the customer’s requirements weren’t documented well in the early stages or changed because of changed market conditions. There is immense customer dissatisfaction because he will have to invest more to receive the outcome he actually needs. With Agile, testing happens throughout the whole process, so the customer checks at intervals that the end product is precisely whatever was planned.

While it is clear that Agile project management is far superior to Waterfall and other traditional approaches, successful implementation of Agile practices requires commitment from all stakeholders and the willingness to invest both time and money to get things right. It will be challenging, but it will be rewarding.

Also check: Agile Best Practices for Effective Team

Conclusion:

In conclusion, Agile methodology stands out as the superior choice for project management, particularly in dynamic environments. Its iterative approach allows for continuous customer feedback, early detection of issues, and flexibility in adapting to changes, all of which are limitations in the Waterfall method. Agile's emphasis on collaboration and customer involvement ensures that the end product meets the market's evolving needs. Despite requiring a higher level of commitment and experience from the team, the benefits of Agile—reduced errors, better risk management, and higher customer satisfaction—make it a more effective and resilient approach in today’s fast-paced industries.  To master Agile practices, Simpliaxis offers Certified Scrum Master® (CSM®) Certification Training, equipping professionals with the skills needed to lead Agile teams successfully