By
Giriraj Singh Solanki
Posted on August 13, 2025
In the field of Business Analysis, selecting the right development methodology is very important for the success of a project. Two of the most commonly used approaches are Agile and Waterfall. Both have their own advantages and limitations, and a Business Analyst must understand when and how to use each of them effectively.
The Waterfall model is a traditional and structured approach where the project is divided into different phases such as requirement gathering, design, development, testing, and deployment. Each phase is completed before moving to the next one. In this approach, all requirements are gathered and documented at the beginning of the project. Once the development starts, making changes becomes difficult.
Waterfall is suitable for projects where the requirements are clear and unlikely to change. For example, in government or banking projects where strict processes are followed, Waterfall works well. The main advantage of this approach is that it provides clear documentation and a well-defined structure. However, the major drawback is its lack of flexibility. If requirements change later, it can cause delays and additional costs.
On the other hand, Agile is a modern and flexible approach that focuses on iterative development. Instead of completing the entire project at once, the work is divided into small parts called sprints. Each sprint usually lasts for 2 to 4 weeks, and at the end of each sprint, a working product increment is delivered.
In Agile, requirements are not fixed at the beginning. They evolve over time based on feedback from stakeholders. This makes Agile highly adaptable to changing business needs. Continuous communication between the team and stakeholders is a key feature of Agile.
For a Business Analyst, the role differs in both approaches. In Waterfall, the BA focuses more on detailed documentation such as BRD and FRD. The BA gathers all requirements at the beginning and ensures that everything is clearly defined before development starts.
In Agile, the BA works closely with the Product Owner and development team. Requirements are written in the form of user stories, which are short and simple descriptions of features. The BA is also involved in backlog refinement, sprint planning, and continuous communication with stakeholders.
There are several differences between Agile and Waterfall. Waterfall follows a linear process, while Agile follows an iterative approach. Waterfall requires complete documentation upfront, whereas Agile focuses more on collaboration and working software. Waterfall is less flexible, while Agile is highly flexible and adaptable.
Both approaches have their own benefits. Waterfall provides better control and clear planning, while Agile allows faster delivery and quick response to changes. Therefore, the choice between Agile and Waterfall depends on the project requirements.
From a Business Analyst’s perspective, understanding both methodologies is important. In real-world scenarios, many organizations use a combination of both approaches, known as hybrid models.
In my opinion, Agile is more suitable for today’s dynamic business environment where requirements change frequently. However, Waterfall is still useful in projects where stability and detailed planning are required.
To conclude, Agile and Waterfall are two important methodologies in Business Analysis. Each has its own strengths and limitations. A skilled Business Analyst should be able to work with both approaches and choose the right one based on the project needs.