Waterfall and Agile are two project management systems that could be used together and or separately.
- Waterfall – American project management systems
- Agile – Japanese project management system
The key elements of each project are – scope, time, and costs/resources.
The use of the Waterfall methodology is suitable for a project with a scope that is precisely defined and is a key element of the project. Reference: Agile vs Waterfall: The Difference Between Methodologies, By Samantha Rhine, 2020, https://www.businesspad.org/agile-vs-waterfall-difference-between-methodologies/ Example: Real estate construction, conference planning, and the like with clear specific pre-prepared schedules and projects, as the scope is precisely defined. The timing of the cited projects is to some extent a limiting factor, setting real and precise limits for implementation. The resources are precisely planned during the construction from the excavation works to the roof structure of the building, as well as during the conferences – a specific number of participants.
The use of Agile methodology is appropriate and useful for projects where time is precisely defined, resources are a determining factor and scope is subject to additional planning. Example: software development. Reference: Waterfall vs Agile project management methodology, by Nicholas Noell, 2021, https://everyonegoesagiletoday.wordpress.com/2021/01/07/waterfall-vs-agile-project-management-methodology/
The meaning of the American Waterfall – is Waterfall, and the Japanese Agile, generally speaking, is Flexible.
Recently, the Japanese method has gained an advantage over the American one, not only because the human factor plays a significant role, but also because it offers flexibility at every level of project life, while Waterfall is a step-by-step development that does not allow to move to the next level. final completion of the previous one. Reference: Waterfall and Incremental model in project management, https://wikipedia-lab.org/waterfall-and-incremental-model-in-project-management/
There is a possibility for a combination of the two methodologies as an example of a major project to be Waterfall with a complimentary one Agile.
The beginning, as you might guess, is set by the United States. As people who care very much about standards, processes, and regulations, they created the Waterfall method. In it, the phases of development follow a specific order. Advance planning is required, which is then realized through the implementation of a sequential plan. Teams are formed for the consistent performance of tasks. The processes are linear and sequential. Reference: Agile vs Waterfall Project Management, https://agileprojectmanagement.home.blog/2020/09/01/agile-vs-waterfall-project-management/
The advantages and disadvantages of this approach are the following:
Advantages of the Waterfall Project Management
It often leads to precise deadlines and budgets
The principles of operation can be easily explained to the user
The stages and activities in them are precisely defined
Concrete results are seen in each phase, Reference: Agile, Scrum and Waterfall project management, https://ossalumni.org/agile-scrum-and-waterfall-project-management/
Disadvantages of the Waterfall approach
A little flexibility, which makes any change difficult and expensive
It is extremely difficult to return to a previous stage
The model is not suitable for complex projects and therefore its use for long-term ones should be avoided
On the other side are the eastern methods. Agile, Scrum, Six Sigma, etc. Reference: http://teachers.wikidot.com/agile-versus-waterfall-project-management Their main difference with the above method is flexibility. They encourage teamwork, collaboration, and adaptability throughout the project life cycle. They usually break down the tasks into small steps, teams, and stages (sprints) of a certain duration. Also, they are characterized by daily stand-up meetings, in which team members share their progress, seek help, or simply communicate with others. A dashboard can also be used to stand out in the office. Its goal is for everyone to be able to see the commitment and progress of the other, as well as the whole project. Reference: Waterfall or Agile? What methodology to choose for your project?, https://pm.mba/posts/waterfall-vs-agile/
The main disadvantage of the Eastern methods is precisely the close cooperation between the teams and the expectation of continuous adaptability. These things are wonderful in themselves, but leaving even one person on a key team can create problems throughout the chain. Reference: Project Lifecycle, BVOP.org, https://bvop.org/posts/projectlifecycle/
Eastern methods are more applied in IT companies and the development of various types of software, while the Waterfall is also applicable in manufacturing. Each method has its pros and cons and depending on the project, different methods can be applied.
Waterfall and Agile project management
The methodology of this model, which is also known as the sequential linear life cycle model. The waterfall model follows in sequential order, so the project development team only moves on to the next phase… https://phron.org/waterfall-and-agile-project-management/
Agile Project Management
Agile Project Management includes different subjects and many Agile and Scrum practices as well, but we will discuss here several major topics… https://agileprogramming.org/agile-project-management/