The waterfall approach in project management practices is a traditional and classic way of working in which each step in the project is performed after the previous ones.
Agile and Scrum, on the other hand, are the so-called iterative and flexible methods of product development. Reference: Agile vs Waterfall management methodology, kosovatimes.net
In this article, we describe the differences between Waterfall project management, Agile methodologies, and the Scrum framework. Reference: Agile, Scrum and Waterfall project management, ossalumni.org
What is the Waterfall Project Management?
The Waterfall model in question is also called a cascade model. It divides the processes into different phases, each of which follows a specific order. These phases are in sequence: Analysis> Design> Implementation> Verification> Maintenance.
Its processes are linear and sequential. Each of the stages in the development process begins only when the previous phase is completely completed. Modification of the product due to changing requirements is not allowed. If I had to break down the advantages and disadvantages, I would make the following sample:
Advantages of Waterfall
- the principles of operation of the model can be easily explained;
- has a well-structured approach to development;
- planning the project and its implementation on schedule is easier;
- testing at each stage ensures early detection of errors;
- the different stages and the activities in them are precisely defined;
- concrete results can be seen in each phase.
Disadvantages of Waterfall
- is not a flexible enough method to change the wishes of the client, which is a real situation is quite common.
- if the customer decides that he wants to return to a previous version/model or anything from our product that was in a previous phase – we cannot guarantee it.
In conclusion, this approach is not recommended if the project will be long-term with very unclear external factors and a high probability of requiring permanent changes. Reference: Waterfall and Incremental model in project management, wikipedia-lab.org Strict adherence to the inappropriate methodology can cost the organization a lot of resources and time, which can be saved with better practices.
What is an Agile methodology?
I would suggest following the Agile methodology. Agile is a process through which a team can manage a project by dividing it into stages and includes constant collaboration with stakeholders and continuous improvement and iteration at each stage. Reference: Waterfall or Agile? What methodology to choose for your project, pm.mba
The customer has early and frequent opportunities to review the product and decide if it is necessary to make changes to the project. Close, daily cooperation, and communication between businessmen and developers is needed.
The disadvantage of Agile methodology
The disadvantage is that the focus is mainly on product development and documentation is in the background.
Unlike the waterfall model in the Agile model, even with a little planning, the project can start and move forward. Agile recognizes that end-user needs are constantly changing, that is, dynamic. Changes can be discussed and features can be changed or removed based on feedback. This effectively gives the customer the ready-made system he wants.